verb
(transitive, archaic) To hold back, to restrain (someone or something).
(reflexive, archaic) To show restraint; to hold oneself back.
(transitive, now rare) To repress (a desire, emotion etc.); to check or curb.
(intransitive, with preposition "from") To stop oneself from some action or interference; to abstain; to eschew
(transitive, rare, regional) To abstain from (food or drink).
noun
The chorus or burden of a song repeated at the end of each verse or stanza.
(by extension) A much repeated comment, complaint, or saying.