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4 definitions found
 for Cirrus
From The Collaborative International Dictionary of English v.0.48 :

  Cirrus \Cir"rus\, n.; pl. Cirri. [L., lock, curl, ringlet.]
     [Also written cirrhus.]
     [1913 Webster]
     1. (Bot.) A tendril or clasper.
        [1913 Webster]
     2. (Zool.)
        (a) A soft tactile appendage of the mantle of many
            Mollusca, and of the parapodia of Annelida. Those near
            the head of annelids are Tentacular cirri; those of
            the last segment are caudal cirri.
        (b) The jointed, leglike organs of Cirripedia. See
            Annelida, and Polych[ae]ta.
            [1913 Webster]
     Note: In some of the inferior animals the cirri aid in
           locomotion; in others they are used in feeding; in the
           Annelida they are mostly organs of touch. Some cirri
           are branchial in function.
           [1913 Webster]
     3. (Zool.) The external male organ of trematodes and some
        other worms, and of certain Mollusca.
        [1913 Webster]
     4. (Meteor.) See under Cloud.
        [1913 Webster]

From The Collaborative International Dictionary of English v.0.48 :

  Cloud \Cloud\ (kloud), n. [Prob. fr. AS. cl[=u]d a rock or
     hillock, the application arising from the frequent
     resemblance of clouds to rocks or hillocks in the sky or
     1. A collection of visible vapor, or watery particles,
        suspended in the upper atmosphere.
        [1913 Webster]
              I do set my bow in the cloud.         --Gen. ix. 13.
        [1913 Webster]
     Note: A classification of clouds according to their chief
           forms was first proposed by the meteorologist Howard,
           and this is still substantially employed. The following
           varieties and subvarieties are recognized:
        (a) Cirrus. This is the most elevated of all the forms
            of clouds; is thin, long-drawn, sometimes looking like
            carded wool or hair, sometimes like a brush or room,
            sometimes in curl-like or fleecelike patches. It is
            the cat's-tail of the sailor, and the mare's-tail of
            the landsman.
        (b) Cumulus. This form appears in large masses of a
            hemispherical form, or nearly so, above, but flat
            below, one often piled above another, forming great
            clouds, common in the summer, and presenting the
            appearance of gigantic mountains crowned with snow. It
            often affords rain and thunder gusts.
        (c) Stratus. This form appears in layers or bands
            extending horizontally.
        (d) Nimbus. This form is characterized by its uniform
            gray tint and ragged edges; it covers the sky in
            seasons of continued rain, as in easterly storms, and
            is the proper rain cloud. The name is sometimes used
            to denote a raining cumulus, or cumulostratus.
        (e) Cirro-cumulus. This form consists, like the cirrus,
            of thin, broken, fleecelice clouds, but the parts are
            more or less rounded and regulary grouped. It is
            popularly called mackerel sky.
        (f) Cirro-stratus. In this form the patches of cirrus
            coalesce in long strata, between cirrus and stratus.
        (g) Cumulo-stratus. A form between cumulus and stratus,
            often assuming at the horizon a black or bluish tint.
            -- Fog, cloud, motionless, or nearly so, lying near
            or in contact with the earth's surface. -- Storm
            scud, cloud lying quite low, without form, and driven
            rapidly with the wind.
            [1913 Webster]
     2. A mass or volume of smoke, or flying dust, resembling
        vapor. "A thick cloud of incense." --Ezek. viii. 11.
        [1913 Webster]
     3. A dark vein or spot on a lighter material, as in marble;
        hence, a blemish or defect; as, a cloud upon one's
        reputation; a cloud on a title.
        [1913 Webster]
     4. That which has a dark, lowering, or threatening aspect;
        that which temporarily overshadows, obscures, or
        depresses; as, a cloud of sorrow; a cloud of war; a cloud
        upon the intellect.
        [1913 Webster]
     5. A great crowd or multitude; a vast collection. "So great a
        cloud of witnesses." --Heb. xii. 1.
        [1913 Webster]
     6. A large, loosely-knitted scarf, worn by women about the
        [1913 Webster]
     Cloud on a (or the) title (Law), a defect of title,
        usually superficial and capable of removal by release,
        decision in equity, or legislation.
     To be under a cloud, to be under suspicion or in disgrace;
        to be in disfavor.
     In the clouds, in the realm of facy and imagination; beyond
        reason; visionary.
        [1913 Webster]

From WordNet (r) 3.0 (2006) :

      n 1: usually coiled [syn: cirrus, cirrhus]
      2: a wispy white cloud (usually of fine ice crystals) at a high
         altitude (4 to 8 miles) [syn: cirrus, cirrus cloud]
      3: a slender flexible animal appendage as on barnacles or
         crinoids or many insects; often tactile

From Moby Thesaurus II by Grady Ward, 1.0 :

  96 Moby Thesaurus words for "cirrus":
     Cloudcuckooland, alto-cumulus, alto-stratus, animal fiber,
     anvil cloud, artificial fiber, banner cloud, billowy cloud,
     cap cloud, capillament, cilium, cirro-cumulus, cirro-fillum,
     cirro-nebula, cirro-stratus, cirro-velum, cirrus cloud,
     cirrus haze, cirrus stripe, cloud, cloud band, cloud bank,
     cloud drift, cloud mass, cloud street, cloudland, cloudling,
     cloudscape, cobweb, cocktail, coil, corkscrew, cottony cloud,
     cumulo-cirro-stratus, cumulo-cirrus, cumulo-nimbus, cumulo-stratus,
     cumulus, cumulus cloud, curl, curl cloud, curlicue, denier,
     evolute, fiber, fibrilla, filament, filamentule, flagellum,
     fleecy cloud, fractocumulus, gossamer, gyre, hair, hank, helix,
     high fog, involute, kink, mackerel sky, mammatocumulus,
     mushroom cloud, nimbus, nimbus cloud, rain cloud, ringlet, roll,
     screw, scroll, scud, skein, snail cloud, spiral, squall cloud,
     storm cloud, strand, strato-cumulus, stratus, stratus cloud,
     suture, swirl, tendril, thread, threadlet, thundercloud,
     thunderhead, twirl, twist, volute, volution, vortex, water carrier,
     web, whirl, whorl, woolpack

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