形容词

1. 奎宁水(略有苦味的无色汽水，常与杜松子酒等调配饮用)
Tonic or tonic water is a colourless fizzy drink that has a slightly bitter flavour and is often mixed with alcoholic drinks, especially gin.

2. 补药;补剂;滋补药
A tonic is a medicine that makes you feel stronger, healthier, and less tired.

3. 有兴奋(或激励)作用的事物
A tonic is anything that makes you feel stronger, more cheerful, or more enthusiastic.

4. 护肤液;护发液;生发水
Skin tonic or hair tonic is a liquid that you put on your skin or hair in order to improve it.

5. 主音
The tonic of a musical scale is its first note.

1. a medicine that strengthens and invigorates

Synonym: restorative

2. (music) the first note of a diatonic scale

Synonym: keynote

3. a sweet drink containing carbonated water and flavoring

e.g. in New England they call sodas tonics

Synonym: popsodasoda popsoda water

4. lime- or lemon-flavored carbonated water containing quinine

Synonym: tonic waterquinine water