Definitions from Wiktionary (joey)

▸ noun:  The immature young of a marsupial, notably a junior kangaroo, but also a young wallaby, koala, etc.
▸ noun:  (Australia, slang) A young child.
▸ noun:  (UK, Ireland, prison slang) A parcel smuggled in to an inmate.
▸ noun:  (theater, circus) A kind of clown.
▸ noun:  (UK, military, slang) A member of the Royal Marines.
▸ noun:  (dated, slang, derogatory, offensive in British) A person with cerebral palsy.
▸ noun:  (dated, slang, derogatory, offensive in British) A stupid person.
▸ noun:  (UK, slang, obsolete) A fourpenny piece, or its value; fourpence worth.
▸ noun:  A diminutive of the male given names Joe or Joseph.
▸ noun:  A diminutive of the female given name Josephine.
▸ noun:  Ellipsis of joey word. [A word that is contained in a kangaroo word.]

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