The Collaborative International Dictionary
Runcinate
Runcinate \Run"ci*nate\, a. [L. runcinatus, p. p. of runcinare to plane off, fr. runcina a plane.] (Bot.) Pinnately cut with the lobes pointing downwards, as the leaf of the dandelion.
Douglas Harper's Etymology Dictionary
runcinate
1776, "saw-toothed," from Modern Latin runcinatus, from Latin runcina "a (carpenter's) plane."
Wiktionary
runcinate
a. 1 (context botany of leaves English) Having tooth-like projections pointing away from the apex. 2 (context botany of leaves English) Having a lacerated aspect with the projection pointing away from the apex, like dandelion leaves.
WordNet
runcinate
adj. having incised margins with the lobes or teeth pointing toward the base; as dandelion leaves
Usage examples of "runcinate".
There was a sinister glitter to the black, runcinate blade, as if its sawing teeth waited to bite flesh.