To supply (something) with staff or crew (of either sex).
The ship was manned with a small crew.
To take up position in order to operate (something).
Man the machine guns!
(possibly obsolete) To brace (oneself), to fortify or steel (oneself) in a manly way. (Compare man up.)
To wait on, attend to or escort.
To accustom (a raptor or other type of bird) to the presence of people.