Answer: trabecula

AnswerCrossword Clue
trabeculaEach of a series or group of partitions formed by bands or columns of connective tissue, esp. a plate of the calcareous tissue forming cancellous bone
trabeculaAny of a number of rodlike structures in plants, e.g., a strand of sterile tissue dividing the cavity in a sporangium
trabecula(Latin) a rodlike structure running across a cavity and giving it internal support