The Collaborative International Dictionary of English v.0.48:
Gallantry \Gal"lant*ry\, n.; pl. Gallantries. [F. galanterie.]
1. Splendor of appearance; ostentatious finery. [Archaic]
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Guess the gallantry of our church by this . . . when
the desk whereon the priest read was inlaid with
plates of silver. --Fuller.
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2. Bravery; intrepidity; as, the troops behaved with great
gallantry.
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3. Civility or polite attention to ladies; in a bad sense,
attention or courtesy designed to win criminal favors from
a female; freedom of principle or practice with respect to
female virtue; intrigue.
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4. Gallant persons, collectively. [R.]
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Helenus, Antenor, and all the gallantry of Troy.
--Shak.
Syn: See Courage, and Heroism.
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