a. [ad. L. lībrālis, f. lībra (see prec.). (See quot. 1656.) Libral as: the Roman as weighing a pound.
1656. Blount, Glossogr., Libral, that is or pertains to a pound weight, or measure, also belonging to the sign Libra.
1872. E. W. Robertson, Hist. Ess., 245. The heavy libral Asses of the early Monetary system.