3. (Mil.)
Defn: In ordnance, a strengthening band surrounding and reënforcing the tube in which the charge is fired.
4. A garment resembling a waistcoat lined with cork, to serve as a life preserver; — called also cork jacket. Blue jacket. (Naut.) See under Blue. — Steam jacket, a space filled with steam between an inner and an outer cylinder, or between a casing and a receptacle, as a kettle. — To dust one's jacket, to give one a beating. [Colloq.]
JACKET
Jack"et, v. t.
1. To put a jacket on; to furnish, as a boiler, with a jacket.
2. To thrash; to beat. [Low]
JACKETED
Jack"et*ed, a.
Defn: Wearing, or furnished with, a jacket.
JACKETING
Jack"et*ing, n.
Defn: The material of a jacket; as, nonconducting jacketing.