pusher

pusher
    n 1: one who intrudes or pushes himself forward [syn: {pusher},
         {thruster}]
    2: an unlicensed dealer in illegal drugs [syn: {pusher}, {drug
       peddler}, {peddler}, {drug dealer}, {drug trafficker}]
    3: someone who pushes [syn: {pusher}, {shover}]
    4: a sandal attached to the foot by a thong over the toes [syn:
       {pusher}, {zori}]
    5: a small vehicle with four wheels in which a baby or child is
       pushed around [syn: {baby buggy}, {baby carriage},
       {carriage}, {perambulator}, {pram}, {stroller}, {go-cart},
       {pushchair}, {pusher}]
    

Pusher \Push"er\, n.
   1. One who, or that which, pushes.
      [1913 Webster]

   2. One who sells illegal drugs, esp. one who tries to
      convince others to use such drugs.
      [PJC]

   3. (Railroad) a second engine attached to the rear of a train
      to provide extra power for climbing steep grades.
      [PJC]
    

19 Moby Thesaurus words for "pusher":
      Mafioso, black marketeer, bootlegger, dealer, double-prop,
      drug pusher, gray marketeer, moonshiner, multi-prop, piston plane,
      propeller plane, propjet, pusher plane, racketeer, single-prop,
      tractor, turbo-prop, turbo-propeller plane, twin-prop