refrain

Short definition from Wiktionary

Verb

1. 1
   To hold back, to restrain (someone or something).
2. 2
   To show restraint; to hold oneself back.
3. 3
   To repress (a desire, emotion etc.); to check or curb.
4. 4
   To stop oneself from some action or interference; to abstain; to eschew
5. 5
   To abstain from (food or drink).

Noun

1. 1
   The chorus or burden of a song repeated at the end of each verse or stanza.
2. 2
   A much repeated comment, complaint, or saying.