trabecula

trabecula (noun; plural -lae; Latin trabecula, little beam): 1. A small bar, rod, bundle of fibers, or septum together with other trabeculae which form part of the framework of various organs

See also: internuncial process. 2. (Mollusca: Cephalopoda) In squid and cuttlefish, a support from the edge of the arm inward for the protection of membranes of the arm.