jacket

Etymology

From Middle French jacquet, diminutive of Old French jaque.

noun

1. A piece of clothing worn on the upper body outside a shirt or blouse, often waist length to thigh length.
2. A piece of a person's suit, beside trousers and, sometimes, waistcoat; coat (US)
3. A protective or insulating cover for an object (e.g. a book, hot water tank, bullet.)
4. (slang) A police record.
   We got a crowd of black, white customers, out-of-state license plates, what have you. Somebody gonna check that out. They gonna drop a dime on me, call 911. And you know with my jacket I can't go back to jail. September 13, 1995, Richard Price, Spike Lee, 00:27:05 from the start, in Clockers, spoken by Rodney Little (Delroy Lindo), 40 Acres and a Mule Filmworks; distributed by Universal Pictures
   Yo's jacket shows possession with intent, possession of unlicensed firearm, and assault, for which he still owes three years. September 13, 1995, Richard Price, Spike Lee, 00:43:50 from the start, in Clockers, spoken by Rocco Klein (Harvey Keitel), 40 Acres and a Mule Filmworks; distributed by Universal Pictures
   "I need to look up somebody's jacket." 2014, Inherent Vice, 01:54:00
5. (military) In ordnance, a strengthening band surrounding and reinforcing the tube in which the charge is fired.
6. The tough outer skin of a baked potato.
   Cook the potatoes in their jackets.
7. (Jamaica) A bastard child, in particular one whose father is unaware that they are not the child’s biological father.
8. (Appalachia) A vest(US); a waistcoat (UK)

verb

1. To confine (someone) to a straitjacket.
   ‘None of your gab, I tell you! If you speak another word, I'll have you jacketed […]!’ 1792, Thomas Holcroft, Anna St. Ives, volume VII, Fragment
2. (transitive) To enclose or encase in a jacket or other covering.
   ...to...prevent...the loss of heat...there is also a layer of silicate cotton or slag wool. This latter material is also employed to jacket the chimney for a certain portion of its length. 1897, Alexander James Wallis-Tayler, Motor Cars Or Power-carriages for Common Roads