1. The innermost bark, consisting of a layer of woody tissue.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• libe,
• libber,
• liver,
• leber,
• libr,
• leiber,
• ljber,
• lkber,
• l9ber,
• l8ber,
• libwr,
• libsr,
• libdr,
• librr,
• lib4r,
• lib3r,
• libee,
• libef,
• libe5,
• libe4

The plural of the "Liber" can be the "libers".

The singular of the "Liber" can be the "Liber".