subs. phr. (? nonce word).See quot.
1676. [SOUTHEY, The Doctor (1834) xciv.]. A TATTLE-DE-MOY, reader, was a newfashioned thing in the year of our Lord 1676, much like a saraband, only it had in it more of conceit and of humour . Thomas Mace invented it and he called it a TATTLE-DE-MOY because it tattles, and seems to speak those very words or syllables.