subs. (colloquial).A knowing one; a DOWNY COVE (q.v.); a WHIPSTER (q.v.). [From the Gr., gnosis = knowledge.]
1819. T. MOORE, Tom Cribs Memorial to Congress, p. 27. Many of the words used by the Canting Beggars in Beaumont and Fletcher, and the Gipsies in Ben Jonsons Masque, are still to be heard among the GNOSTICS of Dyot-street and Tothill-fields.
Adj. (colloquial).Knowing, ARTFUL (q.v.).