Definition of "thunderbird"

thunderbird

/ˈθʌndə.bɜːd/

noun
plural thunderbirds
1. (mythology) A mythological bird, often associated with stormy weather, especially in various indigenous North American mythologies.
  Quotations
  A man there was, grim his expression, just like a Thunderbird his features were frightening.
  1999, Andrew George, transl., Gilgamesh, section VII
2. The golden whistler, an Australian insectivorous songbird (Pachycephala pectoralis, formerly Pachycephala gutturalis), whose male is conspicuously marked with black and yellow, and has a black crescent on the breast.