Origin of jessMiddle English ges from Old French gies, gets, plural (see jet): from its use in letting a hawk fly
transitive verbjessed, jess·ing, jess·es
Origin of jessMiddle English ges from Old French pl. of jet something thrown from Vulgar Latin iectus alteration of Latin iactus past participle of iacere to throw ; see yē- in Indo-European roots.
(third-person singular simple present jesses, present participle jessing, simple past and past participle jessed)
From Middle English, from Middle French jaiet, from Latin gagates 'throw', from Gagas (a town and river in Asia Min).