Trabecula

noun

1. A small supporting beam.
2. A small mineralized spicule that forms a network in spongy bone.
3. A fibrous strand of connective tissue that supports it in place.
4. Either of a pair of movable appendages on the head, in front of the antennae, of some mallophagous insects.
5. One of the fleshy columns, or columnae carneae, in the ventricle of the heart, to which the chordae tendineae are attached.