Where does “хвойный” come from?

хвойный (Russian) comes from Old East Slavic *хво́инъ, from Proto-Slavic *xvòjьnъ, from Proto-Slavic xvoja, from Proto-Balto-Slavic skwajāˀ, from Proto-Indo-European *skwoy-eh₂.

хвойный (Russian): coniferous

Definitions

coniferous

Ancestry of “хвойный”, step by step

Step	Language	Word	Meaning
1	Old East Slavic	*хво́инъ	—
2	Proto-Slavic	*xvòjьnъ	—
3	Proto-Slavic	xvoja	needles or branches of a coniferous tree
4	Proto-Balto-Slavic	skwajāˀ	—
5	Proto-Indo-European	*skwoy-eh₂	—

Every word from Proto-Indo-European *skwoy-eh₂ →

хвойный — Etymology, Origin & Word History | Etymology Explorer