Assertion: whistle | /r/HasProperty | short tone
Facets:
Source sentences:
text: One can sound a long whistle to reset the line, followed by groups of whistles (a short tone for a "1", two for a "2", etc.) to dial numbers.
text: Whistle, short flute having a stopped lower end and a flue that directs the player’s breath from the mouth hole at the upper end against the edge of a hole cut in the whistle wall, causing the enclosed air to vibrate.