either of two large chest muscles (pectoralis major and pectoralis minor), that assist in movements of the shoulder and upper arm
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Words nearby pectoral muscle
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medical definitions for pectoral muscle
Either of two muscles in the chest, the pectoralis major or the pectoralis minor.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.