Synonyms for Quaver (same or very similar meaning)
WordNet sense 1 (a musical note having the time value of an eighth of a whole note):
eighth noteWordNet sense 2 (give off unsteady sounds, alternating in amplitude or frequency):
waverWordNet sense 3 (sing or play with trills, alternating with the half note above or below):
trill, warbleFrom the ODE community, based on WordNetadd/edit