Wiktionary
half-jacket
n. 1 A short coat or jacket. 2 A short bullet jacket which leaves some of the bullet in contact with the bore.
Usage examples of "half-jacket".
Donal shrugged his shoulders in the tight civilian half-jacket and considered its fit as reflected in the mirror of his tiny, boxlike cabin.
He straightened his half-jacket and went out of his cabin and down the long corridor through various sections to the main lounge.