The Collaborative International Dictionary of English v.0.48:

Grab \Grab\ (gr[a^]b), n. [Ar. & Hind. ghur[=a]b crow, raven, a
   kind of Arab ship.] (Naut.)
   A vessel used on the Malabar coast, having two or three
   masts.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Grab \Grab\ (gr[a^]b), v. t. & i. [imp. & p. p. Grabbed
   (gr[a^]bd); p. pr. & vb. n. Grabbing.] [Akin to Sw. grabba
   to grasp. Cf. Grabble, Grapple, Grasp.]
   To gripe suddenly; to seize; to snatch; to clutch.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Grab \Grab\, n.
   1. A sudden grasp or seizure.
      [1913 Webster]

   2. An instrument for clutching objects for the purpose of
      raising them; -- specially applied to devices for
      withdrawing drills, etc., from artesian and other wells
      that are drilled, bored, or driven.
      [1913 Webster]

   Grab bag, at fairs, a bag or box holding small articles
      which are to be drawn, without being seen, on payment of a
      small sum. [Colloq.]

   Grab game, a theft committed by grabbing or snatching a
      purse or other piece of property. [Colloq.]
      [1913 Webster]

WordNet (r) 3.0 (2006):

grab
    n 1: a mechanical device for gripping an object
    2: the act of catching an object with the hands; "Mays made the
       catch with his back to the plate"; "he made a grab for the
       ball before it landed"; "Martin's snatch at the bridle failed
       and the horse raced away"; "the infielder's snap and throw
       was a single motion" [syn: catch, grab, snatch, snap]
    v 1: take hold of so as to seize or restrain or stop the motion
         of; "Catch the ball!"; "Grab the elevator door!" [syn:
         catch, grab, take hold of]
    2: get hold of or seize quickly and easily; "I snapped up all
       the good buys during the garage sale" [syn: snap up,
       snaffle, grab]
    3: make a grasping or snatching motion with the hand; "The
       passenger grabbed for the oxygen mask"
    4: obtain illegally or unscrupulously; "Grab power"
    5: take or grasp suddenly; "She grabbed the child's hand and ran
       out of the room"
    6: capture the attention or imagination of; "This story will
       grab you"; "The movie seized my imagination" [syn: grab,
       seize]