(1):

(n.) An accessory organ such as a tendril, stipule, spine, and the like.

(2):

(n.) The horny inferior surface of the lingua of certain insects.

(3):

(n.) A prop or support.

(4):

(n.) That by which a lever is sustained, or about which it turns in lifting or moving a body.

(5):

(n.) The connective tissue supporting the framework of the retina of the eye.

(6):

(n.) One of the small, spiniform scales found on the front edge of the dorsal and caudal fins of many ganoid fishes.