Crossword Genius

Something to whistle (4)

Ross

I believe the answer is:

tune

<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">something to whistle</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>

(Other definitions for tune that I've seen before include "Of engine, adjust to run smoothly" , "temper" , "Air, melody" , "Adjust a radio receiver to a frequency" , "Song" .)

I've seen this clue in The New York Times.
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