1. (noun) a musical note having the time value of an eighth of a whole note

• eighth note

2. (verb) give off unsteady sounds, alternating in amplitude or frequency

• waver

3. (verb) sing or play with trills, alternating with the half note above or below

• trill
• warble

1. (noun) a tremulous sound

• sound

2. (noun) a musical note having the time value of an eighth of a whole note

• musical note
• note
• tone

3. (verb) give off unsteady sounds, alternating in amplitude or frequency

• sound
• vocalise
• vocalize
• voice

4. (verb) sing or play with trills, alternating with the half note above or below

• sing

1. (noun) a tremulous sound

• waver

2. (noun) a musical note having the time value of an eighth of a whole note

• trill
• warble

3. (verb) sing or play with trills, alternating with the half note above or below

• eighth note
• shake
• trill
• warbler