adj. 1. shaped like a hair; long and slender. Syn. -- capillary. [ PJC ]
2. long and slender with a very fine internal diameter. Syn. -- capillary. [ WordNet 1.5 +PJC ]
n. 1. a very thin line. [ WordNet 1.5 ]
2. the natural margin formed by hair on the head, especially the edge of growth of hair on the forehead; as, a receding hairline. [ WordNet 1.5 ]