noun

1. The highest singing voice (especially as for a boy) or part in musical composition.

2. A person or instrument having a treble voice or pitch; a boy soprano.

3. The highest tuned in a ring of bells.

verb

1. To multiply by three; to make into three parts, layers, or thrice the amount.

2. To become multiplied by three or increased threefold.

3. To make a shrill or high-pitched noise.

Synonyms: keen, screech, shrill, triple, whine

adjective

1. Pertaining to the highest singing voice or part in harmonized music; soprano.

2. High in pitch; shrill.

3. Threefold, triple.

Synonyms: high-pitched, strident

adverb

1. Trebly; triply.

Synonyms: threefold, thrice