An acute illness, with vomiting and dehydration, caused by the toxin hypoglycin A, found in unripe ackee fruit.

(electrical engineering, historical) A glass jar or bottle used to accumulate static electricity between two electrodes.

(US) Alternative form of whisky jack (gray jay, Canada jay).

(Canada) Alternative form of whisky jack (gray jay, Canada jay).

(Cockney rhyming slang) On one's own; alone.

(Australia) The weed Emex australis. / A seed vessel of this plant, which has three symmetrically arranged thorns and a pointed head.

An Asian bird of the crow family (Coloeus dauuricus) closely related to the western jackdaw (Coloeus monedula).

The cherimoya fruit.

plural of Jamaican apple

(obsolete, mineralogy, UK) Sphalerite; zincblende. / (obsolete) Caramel or burnt sugar, used to colour wines, spirits, ground coffee, etc. / (obsolete) A large leather vessel for beer, etc.