详细解释:n. 多面体宝石的底面
详细解释：
cu.let
n.（名词）The small flat face at the bottom of a gem cut as a brilliant.宝石座：以多角形琢磨法切割而成的宝石的底部小平面Armor consisting of overlapping plates used to protect the buttocks.护臀甲：由相互交迭的甲片构成的铠甲，用来保护臀部
来源：Obsolete French [diminutive of] cul [rump] 已废法语 [] cul的小后缀 [臀部] from Latin côlus * see (s)keu- 源自 拉丁语 côlus *参见 (s)keu-