Jacket

A short upper garment, extending downward to the hips; a short coat without skirts.

An outer covering for anything, esp. a covering of some nonconducting material such as wood or felt, used to prevent radiation of heat, as from a steam boiler, cylinder, pipe, etc.

In ordnance, a strengthening band surrounding and reenforcing the tube in which the charge is fired.

A garment resembling a waistcoat lined with cork, to serve as a life preserver; -- called also cork jacket.

To put a jacket on; to furnish, as a boiler, with a jacket.

To thrash; to beat.

(dentistry) dental appliance consisting of an artificial crown for a broken or decayed tooth; "tomorrow my dentist will fit me for a crown"