medlar.

Mespilus germanica, common medlar (now often Crataegus germanica).

Any tree of the genus Mespilus, now Crataegus sect. Mespilus, including many species now in other genera.

Any of several similar trees that bear similar fruit: Stern's medlar (Crataegus × canescens: family Rosaceae).

Any of several similar trees that bear similar fruit: Mediterranean medlar or azarole (Crataegus azarolus: family Rosaceae).

Any of several similar trees that bear similar fruit: Japanese medlar or loquat (Eriobotrya japonica: family Rosaceae).

Any of several similar trees that bear similar fruit: Spanish medlar or bulletwood (Mimusops elengi: family Sapotaceae).

Any of several similar trees that bear similar fruit: African medlar (Vangueria infausta: family Rubiaceae).

Any of several similar trees that bear similar fruit: Wolfberry, goji, red medlar (Lycium spp.).

The fruit of such trees, similar to small apples

The fruit of such trees, similar to small apples: Especially that of Crataegus sect. Mespilus, not eaten until it has begun to decay, or more specifically, to blet.

A woman or a woman's genitalia (as the fruit's appearance resembles an "open-arse").