noun
A wild dog native to Australia (Canis familiaris, Canis familiaris dingo, Canis dingo, or Canis lupus dingo).
(Australia, informal) A cowardly or otherwise despicable person.
verb
(Australia, informal, transitive, intransitive) To behave in a cowardly or treacherous manner.
(Australia, informal, transitive, intransitive) To renege on an agreement or situation.
(Australia, informal, transitive, intransitive) To let down another individual.