Boyd’s Bible Dictionary:
(Prov. 30:31). The original implies a “wrestler,” not a quadruped.
“Greyhound” From Concise Bible Dictionary:
This is literally “girt in the loins,” and reads in the margin “horse” (Prov. 30:31). It probably refers to a girded warhorse as something that “goes well,” and is comely or stately in its going.
“Loins” From Concise Bible Dictionary:
The part of man that is used to prefigure the seat of strength. Descendants are represented as coming out of the loins of a man (Gen. 35:11; Heb. 7:10). The loins were girded up for action and activity. God said to Job, “Gird up now thy loins like a man” (Job 38:3). In the Christian’s conflict with wicked spirits in the heavenlies he is exhorted to have his loins girt about with truth (Eph. 6:14).
Strong’s Dictionary of Hebrew Words:
Meaning:
from an unused root meaning to be slender; properly, the waist or small of the back; only in plural the loins
KJV Usage:
+ greyhound, loins, side