The Collaborative International Dictionary of English v.0.48:

Jug \Jug\, v. i. (Zool.)
   1. To utter a sound resembling this word, as certain birds
      do, especially the nightingale.
      [1913 Webster]

   2. To nestle or collect together in a covey; -- said of
      quails and partridges.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Jug \Jug\ (j[u^]g), n. [Prob. fr. Jug, a corruption of, or
   nickname for, Joanna; cf. 2d Jack, and Jill. See Johannes.]
   [1913 Webster]
   1. A vessel, usually of coarse earthenware, with a swelling
      belly and narrow mouth, and having a handle on one side.
      [1913 Webster]

   2. A pitcher; a ewer. [Eng.]
      [1913 Webster]

   3. A prison; a jail; a lockup. [Slang] --Gay.
      [1913 Webster]

   4. (pl.) A woman's breasts; as, nice jugs. [vulgar slang]
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Jug \Jug\ (j[u^]g), v. t. [imp. & p. p. Jugged (j[u^]gd); p.
   pr. & vb. n. Jugging (j[u^]g"g[i^]ng).]
   [1913 Webster]
   1. To seethe or stew, as in a jug or jar placed in boiling
      water; as, to jug a hare.
      [1913 Webster]

   2. To commit to jail; to imprison. [Slang]
      [1913 Webster]

WordNet (r) 3.0 (2006):

jug
    n 1: a large bottle with a narrow mouth
    2: the quantity contained in a jug [syn: jug, 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, jug, gaol,
         put away, remand]
    2: stew in an earthenware jug; "jug the rabbit"