The Collaborative International Dictionary of English v.0.48:

Azarole \Az"a*role\, n. [F. azerole, the name of the fruit, fr.
   Ar. az-zo'r?r: cf. It. azzeruolo, Sp. acerolo.] (Bot.)
   The Neapolitan medlar (Crat[ae]gus azarolus), a shrub of
   southern Europe; also, its fruit.
   [1913 Webster] Azedarach