Where does “henna” come from?

henna (Old Dutch) comes from Proto-West Germanic *hannju, from Proto-Germanic hanjō, from Proto-Indo-European keh₂n- — to sing.

Ancestry of “henna”, step by step

StepLanguageWordMeaning
1Proto-West Germanic*hannjuhen
2Proto-Germanichanjōhen
3Proto-Indo-Europeankeh₂n-to sing

Words derived from “henna”

Every word from Proto-Indo-European keh₂n- →Every word from Proto-Germanic hanjō →Every word from Proto-West Germanic *hannju →