A wall or fence behind home plate.
A catcher; the position of catcher.
The player who stands immediately behind the striking base.
Something serving to bolster or support a cover story etc.
A thing or a person put in the rear or in the back of something to reinforce, hold, support.
A default arrangement that holds if all else fails.
To bolster, support.
To serve as backstop for.
Twisted strands of steel wire, often coated with zinc, having barbs evenly spaced along them; used to construct agricultural and military fences.