1.Definition: (music) the first note of a diatonic scale

Related Noun(s):keynote

Category: General

2.Definition: a medicine that strengthens and invigorates

Related Noun(s):restorative

Category: Objects

3.Definition: a sweet drink containing carbonated water and flavoring

"In New England they call sodas tonics"

Related Noun(s):pop, soda

Category: Food

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

Category: Food