a plant called {Helenia corniculate}
花碇という植物 - EDR日英対訳辞書
Both ends of the bamboo are sharpened (while leaving its skin) into the shape of a two-pronged fork with sharp, corniculate points.
竹串の両端の皮の部分を残して削り、小角状の胯(また)を付けて尖らせる。 - Wikipedia日英京都関連文書対訳コーパス