whistler

 
Pronunciation: /ˈwɪslə/

noun

  • 1a person who whistles: he couldn’t tell whether the whistler was moving away from or towards him
  • an atmospheric radio disturbance heard as a whistle that falls in pitch, caused by lightning.
  • 2a robust Australasian and Indonesian songbird with a strong and typically hooked bill and a loud melodious call. Also called thickhead.
    • Family Pachycephalidae: four genera, in particular Pachycephala, and many species