Lewis & Short

dē-lumbis, e, adj. [lumbus], lamed in the loins, lamed (post-Aug. and very rare).

  1. I. Lit.: coturnix, Plin. 10, 33, 51, § 103.
  2. II. Trop., weakened, enervated; weak, feeble: summā delumbe salivā, Pers. 1, 104: dietio, Sid. Ep. 8, 16.