tonic
     adj 1: of or relating to or producing normal tone or tonus in
            muscles or tissue; "a tonic reflex"; "tonic muscle
            contraction"
     2: employing variations in pitch to distinguish meanings of
        otherwise similar words; "Chinese is a tonal language"
        [syn: {tonal}]
     3: used of syllables; "a tonic syllables carries the main
        stress in a word" [syn: {accented}] [ant: {atonic}]
     4: relating to or being the keynote of a major or minor scale;
        "tonic harmony"
     5: imparting vitality and energy; "the bracing mountain air"
        [syn: {bracing}, {brisk}, {energizing}, {energising}, {fresh},
         {refreshing}, {refreshful}]
     n 1: lime- or lemon-flavored carbonated water containing quinine
          [syn: {tonic water}, {quinine water}]
     2: a sweet drink containing carbonated water and flavoring; "in
        New England they call sodas tonics" [syn: {pop}, {soda}, {soda
        pop}, {soda water}]
     3: (music) the first note of a diatonic scale [syn: {keynote}]
     4: a medicine that strengthens and invigorates [syn: {restorative}]
Source: WordNet® 2.0