D defs.my
Entry 3 senses Webster, 1913

Backstop

/băk'-stäpˌ/ · Back·stop · IPA /ˈbæk.stɒp/
01 n. In baseball, a fence, prop. at least 90 feet behind the home base, to stop the balls that pass the catcher; also, the catcher himself.
  1. 1.
    In baseball, a fence, prop. at least 90 feet behind the home base, to stop the balls that pass the catcher; also, the catcher himself.
  2. 2.
    In rounders, the player who stands immediately behind the striking base.
  3. 3.
    In cricket, the longstop; also, the wicket keeper.