Stem with modifying proclitic composed of: xs= look/sound like, wat'axk whistle
intransitive verb. whistle (usage: Meaning the sound of a whistle)
Wudi xswa̱t'a̱xga 'na̱x'nuuyu. It's like a whistle sound I hear.
Image from Print Artist Platinum software, version 23, Bonus Graphics CD.