Lewis & Short

exossis, e, and exossus, a, um, adj. [ex-ŏs], without bones, boneless (post-class.).

  1. I. Lit.: cum sit (lepus marinus) cetera exossis, App. Mag. p. 300, 13.
  2. II. Transf.
          1. (α) Pliant, limber, supple, yielding: exossis plane et enervis, App. Mag. p. 322, 1: enervam et exossam saltationem explicat, id. Met. 1, p. 104, 3.
          2. (β) Loose, negligent: dictio, Sid. Ep. 6, 18.