'Flagella' definitions:

Definition of 'Flagella'

From: GCIDE

Flagellum \Fla*gel"lum\, n.; pl. E. Flagellums, L. Flagella. [L., a whip. See Flagellate, v. t.]
1. (Bot.) A young, flexible shoot of a plant; esp., the long trailing branch of a vine, or a slender branch in certain mosses. [1913 Webster]
2. (Zool.) (a) A long, whiplike cilium. See Flagellata. (b) An appendage of the reproductive apparatus of the snail. (c) A lashlike appendage of a crustacean, esp. the terminal ortion of the antenn[ae] and the epipodite of the maxilipeds. See Maxilliped. [1913 Webster]