Front outer angle of each front wing projecting into a falcate tip.
Prickles straightish or falcate, slender or strong, without bristles.
The dorsal fin is very small, falcate, and located in the latter half of the back.
In the genus Pontoporia the dorsal fin is well developed and falcate.
There is a falcate dorsal fin; but the head in outline is not Rorqual-like in spite of its similar proportions.
"Skull with marked but rounded supra-orbital ridges continued into temporal ridges; coronoid process high and falcate" (Alston).
falcate, scythe-shaped; a flat body curved, its edges parallel.
This falcate Orange-tip is one of the daintiest and most exquisite of northern butterflies.
Setae numerous; the appendage short, falcate, with tip simple, but a slender tooth near middle of curved edge.
The dorsal fin is small, located behind the midpoint of the back, and variable in shape from falcate to triangular.
1826, from Latin falcatus, from falcem (nominative falx) "sickle."
falcate fal·cate (fāl'kāt')