The Word 'QUAVER'

Quaver (noun)

definition:
a musical note having the time value of an eighth of a whole note

example:
"After two bars of quavers, we rest for two bars."

Quaver (noun)

definition:
a tremulous sound

example:
"The quaver on that last note should be held a beat longer."

Quaver (verb)

definition:
to sing or play with trills, alternating with the half note above or below

example:
"I quavered that last embellishment."

Quaver (verb)

definition:
to give off unsteady sounds, alternating in amplitude or frequency

example:
"They quavered through the notes as if they had not practiced much."