Definition of "joey"

joey¹

/ˈd͡ʒoʊ.i/

noun
plural joeys
1. The immature young of a marsupial, notably a junior kangaroo, but also a young wallaby, koala, etc.
  Quotations
  As soon as a joey is born, it crawls into its mother's pouch. The joey grows in the pouch.
  2006, Bobbie Kalman, Robin R. Johnson, Koalas and Other Marsupials, Crabtree Publishing Company, page 9
2. (Australia, slang) A young child.
3. Ellipsis of joey word.
  Quotations
  Among the kangaroo words that yield the most joviality and joy are those that conceal multiple joeys.
  1998, Richard Lederer, Dave Morice, The Word Circus, page 129
  Sometimes a kangaroo word has more than one joey.
  2005, Anu Garg, Another Word a Day, page 132
4. (UK, prison slang) A parcel smuggled in to an inmate.
  Quotations
  "Visit in two days though," said Tommo. "Hang in there mate, got a joey coming, we'll be sweet then."
  2012, John Hoskison, Inside: One Man's Experience of Prison

joey²

/ˈd͡ʒoʊ.i/

noun
plural joeys
1. (theater, circus) A kind of clown.

joey³

/ˈd͡ʒoʊ.i/

noun
plural joeys
1. (UK, military, slang) A member of the Royal Marines.

joey⁴

/ˈd͡ʒoʊ.i/

noun
plural joeys
1. (dated, slang, derogatory, offensive in Britain) A person with cerebral palsy.
2. (dated, slang, derogatory, offensive in Britain) A stupid person.

joey⁵

/ˈd͡ʒoʊ.i/

noun
plural joeys
1. (UK, slang, obsolete) A fourpenny piece, or its value; fourpence worth.