ganglion

ganglion is a   Noun

Definition:

[1] A mass or knot of nervous matter, including nerve cells, usually forming an enlargement in the course of a nerve.

[2] A node, or gland in the lymphatic system; as, a lymphatic ganglion.

[3] A globular, hard, indolent tumor, situated somewhere on a tendon, and commonly formed by the effusion of a viscid fluid into it; -- called also weeping sinew. Ganglion cell, a nerve cell. See Illust. under Bipolar.

Synonyms: