noun🔗ShareA rib."The doctor pointed to the costa on the X-ray, explaining that it was fractured. "anatomyphysiologybodypartorganChat with AIVocabulary GamePractice Reading
noun🔗ShareA riblike part of a plant or animal, such as a middle rib of a leaf or a thickened vein or the margin of an insect wing."The teacher pointed to the leaf and explained how the costa, the central vein, provides support and carries water to the entire leaf. "biologyanatomyplantanimalinsectpartorganismstructureChat with AIVocabulary GamePractice Reading
