[kugi-wo-sasu]Literal translation: stab with a nailMeaning: give a warningExample:納期に遅れないよう、彼女にくぎを刺しておいた。:I warned her not to miss the deadline.

くぎを刺す

[jibara-wo-kiru]Literal translation: commit seppuku, cut one’s own bellyMeaning: pay out of one’s own pocket, foot the billExample:旅費は会社から払い戻されなかったので、彼が自腹を切る羽目になった。:Since the company didn’t reimburse him for travel expenses, he had to pay them out of his own pocket.---払い戻す [haraimodosu]: reimburse

軍配をあげる