The DICT Development Group
1 definition found
for M roof
From The Collaborative International Dictionary of English v.0.48 :
M \M\, n.
1. (Print.) A quadrat, the face or top of which is a perfect
square; also, the size of such a square in any given size
of type, used as the unit of measurement for that type:
500 m's of pica would be a piece of matter whose length
and breadth in pica m's multiplied together produce that
number. [Written also em.]
2. (law) A brand or stigma, having the shape of an M,
formerly impressed on one convicted of manslaughter and
admitted to the benefit of clergy.
M roof (Arch.), a kind of roof formed by the junction of
two common roofs with a valley between them, so that the
section resembles the letter M.
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