Fil´oplume, n. Thread-like or hair-like feather; one with slender scape, and without web in most or all of its length.

Fim´briated, a. Fringed.

Fissipal´mate, a. Lobiped and semipalmate, as a grebe’s foot is.

Fis´siped, a. Having cleft toes. Opposed to palmiped.

Fissiros´tral, a. Having the bill cleft far beyond the base of its horny part.

Fissiros´tres, n. An obsolete order of cleft-billed birds.

Flam´mulated, a. Pervaded with reddish color.

Flank, n. Hinder part of side of trunk. (67.)

Flap, n. See Loma.

Flex´ion, n. Bending (of a limb). Opposed to extension.