[poo
sh-er] 
| 1. | a person or thing that pushes. |
| 2. | Slang. a peddler of illegal drugs. |
| 3. | Aeronautics. an airplane that is driven by pusher propellers. |
| 4. | Nautical. one of the masts abaft the mizzen on a sailing vessel having more than three masts, either the sixth or seventh from forward. Compare driver (def. 10b), spanker (def. 1b). |
| 5. | Railroads. a helper attached to the rear of a train, usually to provide extra power for climbing a steep grade. |
| push·er (pŏŏsh'ər) n. Slang One who sells drugs illegally. |
pusher
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