Usually thews. muscle or sinew.
thews, physical strength.
Origin of thew
before 900; Middle English; Old English thēaw custom, usage; cognate with Old High German thau (later dau) discipline; akin to Latin tuērī to watch
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Related Words for thewybulky, sinewy, strapping, sturdy, beefy, burly, able-bodied, athletic, fleshy, hardy, hefty, husky, powerful, robust, stalwart, tough, vigorous, vital
muscle, esp if strong or well-developed
(plural) muscular strength
Word Origin for thew
Old English thēaw; related to Old Saxon, Old High German thau discipline, Latin tuērī to observe, tūtus secure
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
Old English þeaw; see thews.
Online Etymology Dictionary, © 2010 Douglas Harper