push·er /ˈpʊʃɚ/
  推者,後推,積極的推銷員
  Push·er n.
  1. One who, or that which, pushes.
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  pusher
       n 1: one who intrudes or pushes himself forward [syn: thruster]
       2: an unlicensed dealer in illegal drugs [syn: drug peddler,
          peddler, drug dealer, drug trafficker]
       3: someone who pushes [syn: shover]
       4: a sandal attached to the foot by a thong over the toes [syn:
           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]