1. (

• jacket

) a short coat ;

2. (

• jacket ,

) an outer wrapping or casing; "phonograph records were sold in cardboard jackets" ;

3. (

• 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" ;

4. (

• jacket

) the outer skin of a potato ;

5. (

• jacket ,

) the tough metal shell casing for certain kinds of ammunition ;

1. (

• jacket

) provide with a thermally non-conducting cover; "The tubing needs to be jacketed" ;

2. (

• jacket

) put a jacket on; "The men were jacketed" ;