Answer: columellae

AnswerCrossword Clue
columellaeThe axis of a spiral shell
columellaeCOLUMELLA, (Latin) the uvula
columellaeA structure resembling a small column and typically forming a central axis; in particular
columellaeThe pillar around which the cochlea spirals
columellaeAn ossicle of the middle ear of birds, reptiles, and amphibians
columellaeThe axis of the spore-producing body of some lower plants