A Referee's Blowing Tool
This page is the CodyCross answer for the clue below from Rainforest, Group 1205, Puzzle 4 (Fraser Island).
Question
A Referee's Blowing Tool
Answer
WHISTLE
Word Meaning:
WHISTLE — A device designed to be placed in the mouth and blown, or driven by steam or some other mechanism, to make a whistling sound.
Definitions from Wiktionary.