CUPULE

cupule

(noun) a sucker on the feet of certain flies

cupule, acorn cup

(noun) cup-shaped structure of hardened bracts at the base of an acorn

Source: WordNet® 3.1

Etymology

Noun

cupule (plural cupules)

Any small structure shaped like a cup, such as at the base of an acorn, or the sucker on the feet of some flies

Source: Wiktionary

Cu"pule (k"pl), n. Etym: [See Cupola.]

1. (Bot.)

Definition: A cuplet or little cup, as the acorn; the husk or bur of the filbert, chestnut, etc.

2. (Zoöl.)

Definition: A sucker or acetabulum.

Source: Webster’s Unabridged Dictionary 1913 Edition