pusher

• POS: Noun
• HYPHEN: push=er

CIDE DICTIONARY

pusher, n. 

•  One who, or that which, pushes.  [1913 Webster]
•  One who sells illegal drugs, esp. one who tries to convince others to use such drugs.  [PJC]
•  a second engine attached to the rear of a train to provide extra power for climbing steep grades.  [PJC]

OXFORD DICTIONARY

pusher, n.
1 colloq. an illegal seller of drugs.
2 colloq. a pushing or pushy person.
3 a child's utensil for pushing food onto a spoon etc.

THESAURUS

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