treble

Short definition from Wiktionary

Adjective

1. 1
   High in pitch.
2. 2
   Pertaining to the highest singing voice or part in harmonized music; soprano.
3. 3
   Threefold, triple.

Adverb

1. 1
   Trebly; triply.

Noun

1. 1
   The highest singing voice (especially as for a boy) or part in musical composition.
2. 2
   A person or instrument having a treble voice or pitch; a boy soprano.
3. 3
   The highest tuned in a ring of bells.
4. 4
   Any high-pitched or shrill voice or sound.
5. 5
   A threefold quantity or number; something having three parts or having been tripled.
6. 6
   A drink with three portions of alcohol; a triple
7. 7
   Any of the narrow areas enclosed by the two central circles on a dartboard, worth three times the usual value of the segment.
8. 8
   Three goals, victories, awards etc. in a given match or season.
9. 9
   Three goals, victories, awards etc. in a given match or season: A win in the top league, top national cup and top continental cup in the same season.
10. 10
    Alternative form of tribble (“frame for drying paper”).

Verb

1. 1
   To multiply by three; to make into three parts, layers, or thrice the amount.
2. 2
   To become multiplied by three or increased threefold.
3. 3
   To make a shrill or high-pitched noise.
4. 4
   To utter in a treble key; to whine.