To make (meat) tender, as by marinating, pounding, or applying a tenderizer. (verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "tenderize" in a sentence
"It is usually dried in sheets and rolled to tenderize it - thus its name, "machacado" -, so it can be shreded by hand to fry it with eggs and/or salsa."
"If you need to tenderize your venison, brine instead."
"I guess I better get to parboiling that hat to tenderize it some ......."