The DICT Development Group

  twit
       n 1: someone who is regarded as contemptible [syn: twerp, twirp]
       2: aggravation by deriding or mocking or criticizing [syn: taunt,
           taunting]
       v : harass with persistent criticism or carping; "The children
           teased the new teacher"; "Don't ride me so hard over my
           failure"; "His fellow workers razzed him when he wore a
           jacket and tie" [syn: tease, razz, rag, cod, tantalize,
            tantalise, bait, taunt, rally, ride]
       [also: twitting, twitted]