Main Entry: ar·il

Pronunciation: \ˈa-rəl, ˈer-əl\

Function: noun

Etymology: probably from New Latin arillus, from Medieval Latin, raisin, grape seed

Date: 1794

: an exterior covering or appendage of some seeds (as of the yew) that develops after fertilization as an outgrowth from the ovule stalk

— ar·il·late \ˈa-rə-ˌlāt, ˈer-ə-\ adjective