a. [ad. L. lībrālis, f. lībra (see prec.). (See quot. 1656.) Libral as: the Roman ‘as’ weighing a pound.

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1656.  Blount, Glossogr., Libral, that is or pertains to a pound weight, or measure, also belonging to the sign Libra.

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1872.  E. W. Robertson, Hist. Ess., 245. The heavy libral Asses of the early Monetary system.

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