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1. Motivated solely by a desire for monetary or material gain.
2. Hired for service in a foreign army.
n. pl. mer·ce·nar·ies
1. One who serves or works merely for monetary gain; a hireling.
2. A professional soldier hired for service in a foreign army.
[Middle English mercenarie, a mercenary, from Old French mercenaire, from Latin mercēnnārius, from mercēs, wages, price.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.