noun
camphor injection (historical cardiotonic)
Historical medical term; a camphor-based injection used as a heart stimulant in Japan until the late 1950s. Now primarily encountered in historical or medical contexts.
1950年代まで、カンフル注射は強心剤として使われていた。
Until the 1950s, camphor injections were used as a cardiotonic.
noun
shot in the arm; stimulus; impetus
Figurative use derived from the historical medical injection; refers to something that provides a sudden boost, encouragement, or revitalization, often in economic, organizational, or motivational contexts.
新たな投資が地元経済へのカンフル注射となった。
The new investment was a shot in the arm for the local economy.
彼の励ましの言葉がチームにカンフル注射のような効果をもたらした。
His words of encouragement gave the team a shot in the arm.