jacket -- (an outer wrapping or casing; "phonograph records were sold in cardboard jackets")
crown, crownwork, jacket, jacket crown, cap -- ((dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth; "tomorrow my dentist will fit me for a crown")
jacket -- (the outer skin of a potato)
jacket -- (the tough metal shell casing for certain kinds of ammunition)
Overview of verb jacket
The verb jacket has 2 senses
jacket -- (provide with a thermally non-conducting cover; "The tubing needs to be jacketed")
jacket -- (put a jacket on; "The men were jacketed")