Where does “翌檜” come from?

翌檜 (Japanese) comes from Japanese 檜, from Japanese 木, from Old Japanese 木, from Proto-Japonic kəy — tree.

翌檜 (Japanese): the hiba arborvitae or false arborvitae, Thujopsis dolabrata

Definitions

翌檜 traces back through 3 separate lines of ancestry.

Step	Language	Word	Meaning
1	Japanese	檜	the Japanese cypress, "Chamaecyparis obtusa"
2	Japanese	木	a tree or shrub; wood, timber, lumber; a tree
3	Old Japanese	木	a tree or shrub; wood, timber, lumber; Combining...
4	Proto-Japonic	kəy	tree

Step	Language	Word	Meaning
1	Japanese	明日	tomorrow; the near future
2	Japanese	朝	the morning; the morning, morn; the morrow, next...
3	Old Japanese	朝	the morning, morn; the morrow, next morning
4	Proto-Japonic	asa	morning

Step	Language	Word	Meaning
1	Japanese	に	particle for indirect objects; to; particle for...
2	Old Japanese	に	—