Bot. [L. liber bark.] The inner bark of exogens; bast. Also attrib.
1753. Chambers, Cycl. Supp., s.v. Bark, The inner bark or liber.
1797. Encycl. Brit., IX. 603/2. It is the liber, or inner bark, that constitutes the cinnamon.
1857. Henfrey, Elem. Bot., § 765. The bast consists of the separate liber-layers of the Lime-tree.
1861. Bentley, Man. Bot., 31. The liber-cells are among the longest that occur in any of the tissues.
1881. Philad. Rec., No. 3438. 4. Care is necessary to bring the liber of both stock and graft [of the vine] into contact.