Definition of whistler
: one that whistles: such asa : any of various birds; especially : any of numerous oscine birds (especially genus Pachycephala) found chiefly in Australia and South Pacific islands and having a whistling callb : a large marmot (Marmota caligata) of northwestern North America having a shrill alarm callc : a broken-winded horsed : a very-low-frequency radio signal that is generated by lightning discharge, travels along the earth's magnetic-field lines, and produces a sound resembling a whistle of descending pitch in radio receivers
First Known Use of whistler
before 12th century
Seen and Heard
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