Meaning of donkey

don•key

1. the domestic ass, Equus asinus.
2. (since 1874) a representation of this animal as the emblem of the U.S. Democratic party.
3. a stupid, silly, or obstinate person.
4. a woodworking apparatus consisting of a clamping frame and saw, used for cutting marquetry veneers.

1. auxiliary: donkey engine; donkey pump; donkey boiler.