in general, a large, broad piece of anything thin, as paper, cloth, etc.; a broad, thin portion of any substance; an expanded superficies.-a broad piece of cloth, usually linen or cotton, used for wrapping the body or for a covering; especially, one used as an article of bedding next to the body.-a broad piece of paper, whether folded or unfolded, whether blank or written or printed upon; hence, a letter; a newspaper, etc.-a single signature of a book or a pamphlet;-the book itself.-a broad, thinly expanded portion of metal or other substance; as, a sheet of copper, of glass, or the like; a plate; a leaf.-a broad expanse of water, or the like.-a sail.-an extensive bed of an eruptive rock intruded between, or overlying, other strata.-a rope or chain which regulates the angle of adjustment of a sail in relation in relation to the wind; -- usually attached to the lower corner of a sail, or to a yard or a boom.-the space in the forward or the after part of a boat where there are no rowers; as, fore sheets; stern sheets.-to furnish with a sheet or sheets; to wrap in, or cover with, a sheet, or as with a sheet.-to expand, as a sheet.