plural of rein

small of the back; waist

garde de rein: armor protecting the loins, hanging from the backpiece of the cuirass

sprained back, lumbago, backache

plural of garde des reins

(figuratively) to be in a strong enough position, to be on a firm footing, to be solid enough; not to have a faint heart / (figuratively) to be in a strong enough position, to be on a firm footing, to be solid enough; not to have a faint heart; to have enough financial means to bear the costs of something, to have enough financial backing