a. [f. L. tūberāt-us covered with tubers or knobs, f. tūber, TUBER2: see -ED.] Having a tuber or rounded swelling; in Her. applied to a serpent borne with the middle part twisted in a close knot.
c. 1828. Berry, Encycl. Her., I. Gloss., Tuberated, gibbous, knotted, or swelled out, as the middle part of the serpent.
