tonicBrE/ˈtɒnɪk/NAmE/ˈtɑːnɪk/noun (also ˈtonic water) [U, C]aclearfizzy drink (= with bubbles in it) with a slightly bitter taste, that is often mixed with a strong alcoholic drink, especially gin or vodka奎宁水，汤力水（一种味微苦、常加于烈性酒中的有气饮料）◆aginandtonic一杯杜松子酒奎宁水[C]amedicinethatmakesyoufeelstrongerandhealthier, takenespeciallywhenyoufeeltired补药；滋补品◆herbaltonics滋补草药[C, U]aliquidthatyouputonyourhairorskininordertomakeithealthier护发液；护肤液◆skintonic护肤液[C, usually sing.](old-fashioned) anythingthatmakespeoplefeelhealthierorhappier使精神振奋的东西◆TheweekendbreakwasjustthetonicIneeded. 周末休息正是我所需要的养精蓄锐的机会。[C](music音乐) thefirstnoteofascaleofeightnotes主音（自然音阶中的第一音） (also ˌtonic ˈsyllable) [C](phonetics语音学) thesyllableinatone unit on which a change in pitchtakesplace语调音节，语调核心（区别音高变化的音节）