Dictionary.com
Thesaurus.com

tank fighter

American  

noun

Boxing.

  1. a boxer known for false shows of being knocked down or out in bouts the results of which have been prearranged.

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.