Definitions of sheet:

• noun:   bed linen consisting of a large rectangular piece of cotton or linen cloth; used in pairs
• noun:   (nautical) a line (rope or chain) that regulates the angle at which a sail is set in relation to the wind
• noun:   a flat artifact that is thin relative to its length and width
• noun:   used for writing or printing
• noun:   any broad thin expanse or surface

  Example: "A sheet of ice"

• noun:   (mathematics) an unbounded two-dimensional shape
• noun:   newspaper with half-size pages
• noun:   a large piece of fabric (as canvas) by means of which wind is used to propel a sailing vessel
• verb:   come down as if in sheets

  Example: "The rain was sheeting down during the monsoon"

• verb:   cover with a sheet, as if by wrapping

  Example: "Sheet the body"