Definition of sheet
2 a (1)
:a usually rectangular piece of paper;
especially
:one manufactured for printing
(2)
:a rectangular piece of heavy paper with a plant specimen mounted on it
- an herbarium of 100,000 sheets
b
:a printed signature for a book especially before it has been folded, cut, or bound
—usually used in plural
c
:a newspaper, periodical, or occasional publication
- a gossip sheet
d
:the unseparated postage stamps printed by one impression of a plate on a single piece of paper;
also
:a pane of stamps
3
:a broad stretch or surface of something
- a sheet of ice
4
:a suspended or moving expanse (as of fire or rain)
5 a
:a portion of something that is thin in comparison to its length and breadth
b
:a flat baking pan of tinned metal
- a cookie sheet
6
:a surface or part of a surface in which it is possible to pass from any one point of it to any other without leaving the surface
- a hyperboloid of two sheets
