n. & a.1.Twelve times twenty; two hundred and forty.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
References in classic literature ?
The winners then saluted the King and Queen, and withdrew for a space to rest and renew their bow-strings for the keenest contest of all; while the lists were cleared and a new target--the open one--was set up at twelvescore paces.