効く

(1)have an effect or outcome; often the one desired or expected; "The voting process doesn't work as well as people thought"; "How does your idea work in practice?"; "This method doesn't work"; "The breaks of my new car act quickly"; "The medicine works only if you take it with a lot of water"

(2)効果か結果を持つ

(3)しばしば望まれているか、または予想されたもの

(1)