栩type of oakStrokes10OnクKunくぬぎParts木tree羽feathersWords with 栩栩板とちいた · tochiitathick roof shingle (1-3 cm thick, used for shrine buildings and noh stages)栩栩くく · kukujoyous; happy栩葺きとちぶき · tochibukishingling using thick roof shingles; roof shingled in such a manner (usu. shrine buildings, noh stages, etc.)Study it in Yanamino