jess /d͡ʒɛs/noun 1verb 1forms 3 noun1 •A short strap fastened around the leg of a bird used in falconry, to which a leash may be fastened.I am that cedar; shake me not too much; And you the eagles; soar ye ne’er so high, I have the jesses that will pull you down — 1594 verb1 •To fasten a strap around the leg of a hawk. formsjessed · jessing · jesses