whistler

definition: Australian and southeastern Asian birds with a melodious whistling call
example:
speech part: noun
synonyms: thickhead
definition: large-headed swift-flying diving duck of Arctic regions
example:
speech part: noun
synonyms: goldeneye
definition: large North American mountain marmot
example:
speech part: noun
synonyms: hoary marmot whistling marmot
definition: someone who makes a loud high sound
example:
speech part: noun
synonyms:

How whistler is being used?