Also found in: Dictionary, Thesaurus, Medical, Encyclopedia.
wet (one's) whistle
To have something to drink. I'm parched. I'm going to need to wet my whistle before we go on. If you're looking for Barney, he's down at the pub wetting his whistle.
wet one's whistle
Rur. to take a drink. He stopped at the bar to wet his whistle. I don't need a big glass of water. Just enough to wet my whistle.
wet (one's) whistleInformal
To take a drink.