名詞 crescent:

1. any shape resembling the curved shape of the moon in its first or last quarters

形容詞 crescent:

1. resembling the new moon in shape
   同義詞：crescent-shaped, semilunar, lunate

1. A disk, globe, or crescent resembling the natural satellite of Earth.
   月狀物，新月狀物類似地球自然衛(wèi)星的碟、球體或新月狀物
2. Crescent is a sign of the Muslim religion.
   新月形是伊斯蘭教的象征。

cres.cent

n.（名詞）
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：月亮在上弦時或下弦時的形狀，其凹邊和凹邊均匯合成點
Something having concave and convex edges terminating in points.
新月形物：凹邊和凹邊匯合成點的物體
adj.（形容詞）
Crescent-shaped.
新月狀的
Waxing, as the moon; increasing.
漸圓的，漸強的：月亮等漸圓的；逐漸增強的

來源：
Middle English cressaunt
中古英語 cressaunt
from Anglo-Norman
源自 英法語
variant of Old French creissant [from present participle of] creistre [to grow]
古法語 creissant的變體 [] 源自creistre的現(xiàn)在分詞 [生長]
from Latin crôscere * see ker- 2
源自 拉丁語 crôscere *參見 ker- 2

【引伸】
crescen.tic