gage a pledge, RICHARD II., i. 1. 69, 146,161,
174,
176, 186 ; iv. 1. 25,
34,
46, etc.
“Gage. A pledge,
French. Hence the glove or gauntlet thrown down in challenges was called a gage, because, by throwing it, the challenger pledged
himself to meet the person who should take it up.”
Nares's Gloss.

