(1):
(n. pl.) The eyelashes.
(2):
(n. pl.) Small, vibratory, swimming organs, somewhat resembling true cilia, as those of Ctenophora.
(3):
(n. pl.) Small, generally microscopic, vibrating appendages lining certain organs, as the air passages of the higher animals, and in the lower animals often covering also the whole or a part of the exterior. They are also found on some vegetable organisms. In the Infusoria, and many larval forms, they are locomotive organs.
(4):
(n. pl.) Hairlike processes, commonly marginal and forming a fringe like the eyelash.