gage (n.) Look up gage at Dictionary.com
"pledge," c.1300, from Old French gage "pledge (of battle), security, guarantee" (11c.), from Frankish *wadja-, from Proto-Germanic *wadi- (see wed). Italian gaggio, Spanish and Portuguese gage are French loan-words.
gage (v.) Look up gage at Dictionary.com
c.1400, "to deposit as security," from Old French gager, gagier, from gage (see gage (n.)). Related: Gaged; gaging. For the measuring sense, see gauge (v.).