'Pusher' definitions:

Definition of 'pusher'

From: WordNet
noun
One who intrudes or pushes himself forward [syn: pusher, thruster]
noun
An unlicensed dealer in illegal drugs [syn: pusher, drug peddler, peddler, drug dealer, drug trafficker]
noun
Someone who pushes [syn: pusher, shover]
noun
A sandal attached to the foot by a thong over the toes [syn: pusher, zori]
noun
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]

Definition of 'Pusher'

From: GCIDE
  • 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]

Synonyms of 'pusher'

From: Moby Thesaurus