石せっ火か

noun

flint fire; flash

Literally the spark from striking flint; often used metaphorically for something extremely brief or instantaneous. Common in the idiom 石火の光 (a flash of light) or in expressions like 石火の如く (like a flash).

• 石せっ火かの光ひかりのような一いっ瞬しゅんの出で来き事ごとだった。

  It was a momentary event, like a flash of light from flint.

• 彼かれの動うごきは石せっ火かの如ごとく素す早ばやかった。

  His movement was as quick as a flash.