jacket meaning and definition

JACKET noun

Definition of jacket (noun)

1. a short coat
2. an outer wrapping or casing
   • "phonograph records were sold in cardboard jackets"
3. (dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth
   • "tomorrow my dentist will fit me for a crown"
   • synonyms: cap, crown, crownwork, jacket crown
4. the outer skin of a potato
5. the tough metal shell casing for certain kinds of ammunition

JACKET verb

Definition of jacket (verb)

1. provide with a thermally non-conducting cover
   • "The tubing needs to be jacketed"
2. put a jacket on
   • "The men were jacketed"