refrain (
http://definr.com/refrain)
n : the part of a song where a soloist is joined by a group of
singers [syn:
chorus]
v 1: not do something; "He refrained from hitting him back"; "she
could not forbear weeping" [syn:
forbear] [ant:
act]
2: choose to refrain; "I abstain from alcohol" [syn:
abstain,
desist] [ant:
consume]