wager boat noun

A light boat for a race between single scullers

wager of battle noun (law; historical)

Trial by combat, a usage which permitted the accused and accuser, in cases where direct evidence was lacking, to challenge each other to mortal combat

wager of law noun (historical)

Compurgation, ie the act, by several witnesses, of swearing jointly to the character of a defendant or accused person, so as to clear him or her