Definition of dag in English:

dag

Pronunciation /daɡ/ /dæɡ/

noun

  • 1usually dagsAustralian, New Zealand A lock of wool matted with dung hanging from the hindquarters of a sheep.

  • 2Australian, New Zealand informal An entertainingly eccentric person; a character.

    • ‘your father must have been a bit of a dag’
  • 3Australian informal A staid or socially inept person.

    1. 3.1An untidy or dirty-looking person.

Origin

Late Middle English (denoting a hanging pointed part of something): possibly related to tag. dag (sense 1 of the noun) dates from the early 17th century; dag (sense 2 of the noun) is a transferred use of English dialect meaning ‘a challenge’.