Dictionary

A military man serving on horse, early modern cavalry officers who had abandoned the heavy armor of medieval knights.

A gallant: a sprightly young dashing military man.

A gentleman of the class of such officers, particularly:

Someone with an uncircumcised penis.

Of a man: to act in a gallant and dashing manner toward (women).

Not caring enough about something important.

High-spirited.

Supercilious.

Of or pertaining to the party of King Charles I of England (1600–1649).