Meniscus - Definition
meniscus
n 1: (anatomy) a disk of cartilage that serves as a cushion
between the ends of bones that meet at a joint [syn:
meniscus, semilunar cartilage]
2: (optics) a lens that is concave on one side and convex on the
other
3: (physics) the curved upper surface of a nonturbulent liquid
in a vertical tube