1) thigh Part of Speech: noun masculine A Related Word by BDB/Strong’s Number: the same as H6343 Same Word by TWOT Number: 1756c
Brown-Driver-Briggs
II. [מַּ֫הַד] noun [masculine]thigh (probably loan-word (through Aramaic, otherwise =ז) from Arabic thigh and (compare WeGGN, 1893, 479) sub-tribe, Palmyrene פחדtribe); — גִּידֵי פַחְדּוֺJob 40:17 Kt the sinews of his thigh (Qr מְּחָדָיו), of hippopotamus.
Job 40:17 HEB:[פַחֲדֹו כ] (פַחֲדָ֣יו ק) יְשֹׂרָֽגוּ׃ NAS: The sinews of his thighs are knit together. KJV: the sinews of his stones are wrapped together. INT: A cedar the sinews stone are knit
=ז) from Arabic 
thigh and (compare WeGGN, 1893, 479) sub-tribe, Palmyrene פחדtribe); — גִּידֵי פַחְדּוֺJob 40:17 Kt the sinews of his thigh (Qr מְּחָדָיו), of hippopotamus.