Liber
Liber (lī"bẽr) , noun
[L. See Libel.]
(Botany) The inner bark of plants, lying next to the wood. It usually contains a large proportion of woody, fibrous cells, and is, therefore, the part from which the fiber of the plant is obtained, as that of hemp, etc.
Collocations (1)
Liber cells , elongated woody cells found in the liber.