noun.
An ass; or (less frequently) a mule.
noun.
A stupid or obstinate fellow; an ass.
noun.
a small auxiliary engine not used for propelling, but for pumping water into the boilers, raising heavy weights, and like purposes.
noun.
a steam pump for feeding boilers, extinguishing fire, etc.; -- usually an auxiliary.
noun.
the large round seed of the Mucuna pruriens, a tropical leguminous plant.