Definition of whistler
:one that whistles: such as
a
: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 call
b
:a large marmot (Marmota caligata) of northwestern North America having a shrill alarm call
c
:a broken-winded horse
d
: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
Writing? Check your grammar now!