- pectoral muscles.
Origin of pecs
First recorded in 1965–70; by shortening
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for pec
- (usually plural) informal short for pectoral muscle
- an industrial city in SW Hungary: university (1367). Pop: 158 942 (2003 est)
- A pectoral muscle. Often used in the plural.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.