meaning of Jug

JUG - acronym - Justice Under God, a form of detention

Jug  Military Prison.

General. Originally US. From 1815 (OED). Attested in numerous sources.

This was first used of a prison, but was adapted to mean a
military prison in World War I. It was more fully 'stone-jug'.
Partridge suggests that it derives from the French 'joug',
'a yoke' from the Scots 'joug(s)', 'a pillory'.

From Webster's Revised Unabridged Dictionary (1913) [web1913]:

  Jug \Jug\, n. [Prob. fr. Jug, a corruption of, or nickname for,
     Joanna; cf. 2d Jack, and Jill. See {Johannes}.]
     1. A vessel, usually of coarse earthenware, with a swelling
        belly and narrow mouth, and having a handle on one side.

     2. A pitcher; a ewer. [Eng.]

     3. A prison; a jail; a lockup. [Slang] --Gay.

From Webster's Revised Unabridged Dictionary (1913) [web1913]:

  Jug \Jug\, v. t. [imp. & p. p. {Jugged}; p. pr. & vb. n.
     {Jugging}.]
     1. To seethe or stew, as in a jug or jar placed in boiling
        water; as, to jug a hare.

     2. To commit to jail; to imprison. [Slang]

From Webster's Revised Unabridged Dictionary (1913) [web1913]:

  Jug \Jug\, v. i. (Zo["o]l.)
     1. To utter a sound resembling this word, as certain birds
        do, especially the nightingale.

     2. To nestle or collect together in a covey; -- said of
        quails and partridges.

From WordNet (r) 2.0 [wn]:

  jug
       n 1: a large bottle with a narrow mouth
       2: the quantity contained in a jug [syn: {jugful}]
       v 1: lock up or confine, in or as in a jail; "The suspects were
            imprisoned without trial"; "the murderer was
            incarcerated for the rest of his life" [syn: {imprison},
             {incarcerate}, {lag}, {immure}, {put behind bars}, {jail},
             {gaol}, {put away}, {remand}]
       2: stew in an earthenware jug; "jug the rabbit"
       [also: {jugging}, {jugged}]

Webster's (II Third Riverside University Dictionary) jug n.
[Poss. < Jug, nickname for Joan.] 1. A small pitcher. 2.a. A tall,
often rounded vessel of earthenware, glass, or metal with a narrow
neck, a handle, and usu. a stopper or cap. b. The contents of a jug.
3. Slang. A jail. --vt. jugged, jugging, jugs. 1. To stew
(e.g.; a hare) in an earthenware vessel. 2. Slang. To put in jail.