n. 使用长矛的骑兵, 兰谢舞

[ noun ]
(formerly) a cavalryman armed with a lance
<noun.person>

Lancer \Lan"cer\, n. [Cf. F. lancier.]
1. One who lances; one who carries a lance; especially, a
member of a mounted body of men armed with lances,
attached to the cavalry service of some nations.
--Wilhelm.

2. A lancet. [Obs.]

3. pl. (Dancing) A set of quadrilles of a certain
arrangement. [Written also {lanciers}.]