noun

• (uncountable) Area or situation which screens a person or thing from view.
  "The soldiers took cover behind a ruined building."
• (music) A new performance or rerecording of a previously recorded song; a cover version; a cover song.
• (cricket) A fielding position on the off side, between point and mid off, about 30° forward of square; a fielder in this position.
  "The captain signalled his best fielder from short leg to cover."
• (cricket) A tarpaulin or other device used to cover the wicket during rain, to prevent it getting wet.
  "The covers were put on just before lunch."

adj

• (music) Of, pertaining to, or consisting of cover versions.

verb

• (transitive) To place something over or upon, as to conceal or protect.
  "He covered the baby with a blanket."
• (transitive) To be over or upon, as to conceal or protect.
  "The blanket covered the baby."
• (transitive) To be upon all of, so as to completely conceal.
  "Regular hexagons can cover the plane."
• (transitive) To set upon all of, so as to completely conceal.
  "You can cover the plane with regular hexagons."