The Collaborative International Dictionary of English v.0.48:

Bang \Bang\ (b[a^]ng), v. t. [imp. & p. p. Banged; p. pr. &
   vb. n. Banging.] [Icel. banga to hammer; akin to Dan. banke
   to beat, Sw. b[*a]ngas to be impetuous, G. bengel club,
   clapper of a bell.]
   1. To beat, as with a club or cudgel; to treat with violence;
      to handle roughly.
      [1913 Webster]

            The desperate tempest hath so banged the Turks.
                                                  --Shak.
      [1913 Webster]

   2. To beat or thump, or to cause (something) to hit or strike
      against another object, in such a way as to make a loud
      noise; as, to bang a drum or a piano; to bang a door
      (against the doorpost or casing) in shutting it.
      [1913 Webster]

   3. To have sexual intercourse with; to fuck; -- usually used
      with the male as a subject. Considered vulgar or obscene.
      [vulgar slang]
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Banging \Bang"ing\, a.
   Huge; great in size. [Colloq.] --Forby.
   [1913 Webster]

WordNet (r) 3.0 (2006):

banging
    adj 1: (used informally) very large; "a thumping loss" [syn:
           humongous, banging, thumping, whopping,
           walloping]
    n 1: a continuing very loud noise
    2: the act of subjecting to strong attack [syn: battering,
       banging]

Moby Thesaurus II by Grady Ward, 1.0:

21 Moby Thesaurus words for "banging":
   blasting, bumping, bursting, cracking, crashing, exploding,
   explosive, flapping, knocking, popping, rapping, slapping,
   slatting, spanking, tapping, thumping, thundering, walloping,
   whacking, whaling, whopping