crescent
【n.】
●The figure of the moon as it appears in its first or last quarter, with concave and convex edges terminating in points.
○蛾眉月：月亮在上弦时或下弦时的形状，其凹边和凹边均汇合成点
●Something having concave and convex edges terminating in points.
○新月形物：凹边和凹边汇合成点的物体
【adj.】
●Crescent-shaped.
○新月状的
●Waxing, as the moon; increasing.
○渐圆的，渐强的：月亮等渐圆的；逐渐增强的
中国诗坛上有名的“
新月派”用英语：a style of crescent
所以，应该是合适的。