Pronunciation: (poosh'ur), [key]
1. a person or thing that pushes.
2. Slang.a peddler of illegal drugs.
3. airplane that is driven by pusher propellers.
4. of the masts abaft the mizzen on a sailing vessel having more than three masts, either the sixth or seventh from forward. Cf. 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.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

push-downpusher propeller
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