threepenny adjective & noun. ['Ɵrʌp(ǝ)ni, 'Ɵrʊ-] LME.
[from THREE + PENNY. Cf. THRUPPENNY.]
A. adjective.
1. Worth or costing threepence or three (new) pence. LME.
threepenny bit Hist. a coin worth three old pence, orig. silver, later nickel brass and dodecagonal. threepenny nail [orig. costing threepence per hundred] a small nail.

2. fig. Trifling, paltry, cheap. arch. E17.
b. noun. A coin worth threepence; a threepenny bit. E18.

[TahlilGaran] English Dictionary ▲