/jes/ , Falconry.
n.
1. a short strap fastened around the leg of a hawk and attached to the leash.
v.t.
2. to put jesses on (a hawk).
[ 1300-50; ME ges ges, gez, getz (nom.) ( get obl. > F jet; cf. JET 1 ) jactus a throwing, equiv. to jac ( ere ) to throw + -tus suffix of v. action ]