(chiefly Britain, New Zealand) A candy apple. / (Britain, historical, slang) A kind of British trench mortar used in World War I.

(law) of or relating to appeals; appellate / in the process of appealing

(law) a litigant or party that is making an appeal in court / One who makes an earnest entreaty of any kind. / (obsolete) One who challenges another to single combat.

The bullock's heart, Annona reticulata / The soursop Annona muricata (fruit and tree) / The sugar apple, Annona squamosa.

(idiomatic, dated, often pluralized) Horse manure, especially when deposited on a road.

A fruit native to Pacific islands such as Tahiti. / The tree that bears this fruit, Spondias dulcis (syn. S. cytherea)

(networking) A packet of data exchanged between two application programs across a network.

Put into practical use. / Of a branch of science, serving another branch of science or engineering.

simple past tense and past participle of apply

That appeals to, or stimulates the appetite. / (by extension) Appealing or enticing.