名詞 cupule:

1. cup-shaped structure of hardened bracts at the base of an acorn
   同義詞：acorn cup
2. a sucker on the feet of certain flies

cu.pule

n.Biology （名詞）【生物學(xué)】
A small cup-shaped structure or organ, such as the cup at the base of an acorn or one of the suckers on the feet of certain flies.
杯形器具：一種小型的杯狀結(jié)構(gòu)或器官，如橡樹果實(shí)莖部的杯狀物或位于某些蒼蠅腳上的吸盤之一

來源：
Late Latin côpula [little cask]
后期拉丁語 côpula [小桶]
diminutive of Latin côpa [tub]
拉丁語 côpa的小后綴 [桶]