To Whistle
expression, godan verb
You know that 口笛 is "whistling." So, if you're blowing your whistle you're going to whistle.
くちぶえをふく
The readings are of 口笛 and the reading you learned from 吹.
口笛を吹くことにどんな魅力を感じますか。
What attracts you to whistling?