You searched for: “jessing
jess, jessing, jessed
1. A short strap with a ring for attaching a leash, fastened around one of the legs of a falcon or other trained bird of prey/
2. To put a jess on a bird.
3. Etymology: from about the 14th century, from Old French ges, form of get, "act of throwing"; from Latin jactus which comes from jacere, "to throw".