一ひと泡あわ

noun

a blow; a shock

Almost always used in the idiom 一泡吹かせる (ひとあわふかせる), meaning to give someone a shock or a scare, or to startle them. Rarely used independently.

• 彼かれの突とつ然ぜんの辞じ任にんは会かい社しゃに一ひと泡あわ吹ふかせた。

  His sudden resignation gave the company a shock.

• ライバルに一ひと泡あわ吹ふかせる作さく戦せんを考かんがえている。

  We're thinking of a plan to give our rivals a scare.