noun
A single short burst of wind, breath, or air. Often used with 風 or 息.
一吹きの風でろうそくが消えた。
A single gust of wind blew out the candle.
彼は一吹きでほこりを払った。
He blew the dust away with one puff.
一息 refers to a single breath or a short rest, while 一吹き is specifically a puff or blast of air.
Compound of 一 (ひと, 'one') and 吹き (ふき, the continuative form of 吹く 'to blow').