adj. (back slang).A half. FLATCH-KENNURD = half drunk; FLATCH-YENORK = half-a-crown; FLATCH-YENNEP = a half-penny (see subs., sense 1).
Subs. 1.A half-penny. [An abbreviation of FLATCH-YENNEP.] For synonyms, see MAG.
c. 1866. VANCE, The Chickaleary Cove. I doesnt care a FLATCH, as long as Ive a tach.
2. (coiners).A counterfeit half-crown. For synonyms, see MADZA.