The Collaborative International Dictionary of English v.0.48:

Nab \Nab\, v. t. [imp. & p. p. Nabbed (n[a^]bd); p. pr. & vb.
   n. Nabbing.] [Dan nappe, or Sw. nappa.]
   1. To catch or seize suddenly or unexpectedly. [Colloq.]
      --Smollett.
      [1913 Webster]

   2. To capture; to arrest; as, the police nabbed the culprit
      wtrying to hide in the basement.
      [PJC]

The Collaborative International Dictionary of English v.0.48:

Nab \Nab\ (n[a^]b), n. [Cf. Knap, Knop, Knob.]
   1. The summit of an eminence. [Prov. Eng.] --Halliwell.
      [1913 Webster]

   2. (Firearms) The cock of a gunlock. --Knight.
      [1913 Webster]

   3. (Locksmithing) The keeper, or box into which the lock is
      shot. --Knight.
      [1913 Webster]

WordNet (r) 3.0 (2006):

nab
    v 1: tag the base runner to get him out
    2: take into custody; "the police nabbed the suspected
       criminals" [syn: collar, nail, apprehend, arrest,
       pick up, nab, cop]
    3: seize suddenly

Moby Thesaurus II by Grady Ward, 1.0:

41 Moby Thesaurus words for "nab":
   apprehend, apprehension, arrest, arrestation, arrestment, bobby,
   bull, bust, cabbage, capture, catch, clout, clutch, collar,
   constable, cop, detain, detention, flatfoot, fuzz, grab, grapple,
   heat, hook, make a pinch, nail, nick, nip, paddy, peeler, pick up,
   pickup, pinch, pull in, put under arrest, run in, snatch, take,
   take in, take into custody, take prisoner



V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

NAB
       National Association of Broadcasters (org., USA)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

NAB
       Netware Asynchronous Board (Novell, Netware)