Nouns

(n)jacketa short coat
(n)jacketan outer wrapping or casing“phonograph records were sold in cardboard jackets”
(n)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”
(n)jacketthe outer skin of a potato
(n)jacketthe tough metal shell casing for certain kinds of ammunition

Verbs

(v)jacketprovide with a thermally non-conducting cover“The tubing needs to be jacketed”
(v)jacketput a jacket on“The men were jacketed”