Dictionary.com
Thesaurus.com
Synonyms

reins

American  
[reynz] / reɪnz /

plural noun

  1. the kidneys.

  2. the region of the kidneys, or the lower part of the back.

  3. (especially in Biblical use) the seat of the feelings or affections, formerly identified with the kidneys.

reins British  
/ reɪnz /

plural noun

  1. archaic the kidneys or loins

"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

Etymology

Origin of reins

before 1000; Middle English reines, reenes < Old French reins; compare Old English (once) rēnys; both < Latin rēnēs kidneys, loins (plural); renal

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.