Cross·bar n. A transverse bar or piece, as a bar across a door, or as the iron bar or stock which passes through the shank of an anchor to insure its turning fluke down.
Crossbar shot, a projectile which folds into a sphere for loading, but on leaving the gun expands to a cross with a quarter ball at the end of each arm; -- used in naval actions for cutting the enemy's rigging.
n 1: a horizontal bar that goes across something
2: game equipment consisting of a horizontal bar to be jumped
or vaulted over
3: long thin horizontal crosspiece between two vertical posts