名詞 gallant:

1. a man who is much concerned with his dress and appearance
   同義詞：dandy, dude, fop, sheik, beau, swell, fashion plate, clotheshorse
2. a man who attends or escorts a woman
   同義詞：squire

形容詞 gallant:

1. unflinching in battle or action
2. lively and spirited
   同義詞：dashing
3. having or displaying great dignity or nobility
   同義詞：lofty, majestic, proud
4. being attentive to women like an ideal knight
   同義詞：chivalrous, knightly

1. A gallant feathered hat; cut a gallant figure at the coronation.
   華麗時髦的帶有羽毛的帽子; 加冕禮給人一種時髦的印象
2. Audacious and gallant; spirited.
   闖勁足的闖勁足的而且英勇的; 精力充沛的
3. These gallant soldiers will protect our country.
   這些勇敢的士兵會保衛(wèi)我們的國家的。
4. He was very gallant at the ball.
   他在舞會上對婦女大獻殷勤。

gal.lant

adj.（形容詞）
Smartly or boldly stylish; dashing:
漂亮的，非常時髦的；打扮入時的：
例句：
a gallant feathered hat; cut a gallant figure at the coronation.
華麗時髦的帶有羽毛的帽子；加冕禮給人一種時髦的印象

Unflinching in battle or action; valiant:
勇敢的，無畏的：在戰(zhàn)爭或行動中果敢的；勇敢的：
例句：
put up a gallant resistance to the attackers.
英勇頑強地抵抗攻擊者

Nobly or selflessly resolute:
俠義的，毅然的：
例句：
made a gallant attempt to save his friend`s reputation.
毅然決然地挽救他朋友的聲譽

Stately; majestic.
莊嚴的；高貴的
[g…-l2nt., -lônt.]
[g…-l2nt., -lônt.]
Courteously attentive especially to women; chivalrous.
對婦女獻殷勤的；騎士的
Flirtatious; amorous.
輕浮的；多情的
n.（名詞）

A fashionable young man.
時髦的年輕男子

A man courteously attentive to women.
對婦女彬彬有禮的男子
A woman`s lover; a paramour.
求愛者；情人
v.（動詞）
gal.lant.ed,gal.lant.ing,gal.lants[g…-l2nt., -lônt.]
v.tr.（及物動詞）
To woo or pay court to (a lady).
向（女士）求愛或獻殷勤
v.intr.（不及物動詞）
To play the gallant.
向婦女獻殷勤

來源：
Middle English galaunt
中古英語 galaunt
from Old French galant [present participle of] galer [to rejoice]
源自 古法語 galant [] galer的現在分詞 [歡喜，歡樂]
[of Germanic origin] * see wel-
[源于日耳曼語] *參見 wel-

【引伸】
gal.lantly
adv.（副詞）