II. buff2 (
also buff up)
verb [transitive][
Date: 1800-1900;
Origin: ⇒ buff1; because leather was used for polishing ( ⇒ buff1(2))]
to polish something with a cloth:
Sandra was buffing her nails.buff up phrasal verb informal to exercise in order to make your muscles bigger:
Smith buffed up for his role as Muhammad Ali. [TahlilGaran] Dictionary of Contemporary English ▲