tra·bec·u·la 
(trə-bĕkyə-lə)
(trə-bĕkyə-lə)n. pl. tra·bec·u·lae (-lē′)
1. Any of the supporting strands of connective tissue projecting into an organ and constituting part of the framework of that organ.
2. Any of the fine spicules forming a network in cancellous bone.
[Latin trabēcula, little beam or bar, diminutive of trabs, trab-, beam; see treb- in the Appendix of Indo-European roots.]
tra·becu·lar adj.