an object mounted on a post or attached to a movable crossbar mounted on a post, used as a target in the medieval sport of tilting.
2.
the sport of tilting at a quintain.
Origin: 1400–50; late ME quyntain object for tilting at < MF quintaine or ML quintāna, of obscure orig.; the alleged connection with L quīntāna “market place in a military camp” is dubious
quin·tain (kwĭn'tən) n. A post or an object mounted on a post, used as a target in tilting exercises.
[Middle English quintaine, from Old French, probably from Latin quīntāna (via), fifth (street in a Roman camp, supposedly used for military exercises), from quīntus, fifth; see penkwe in Indo-European roots.]