Where does “duillechán” come from?

duillechán (Middle Irish) comes from Middle Irish duille, from Old Irish duilne, from Proto-Celtic *dolinyā, from Proto-Indo-European dʰelh₁- — blossom; be green; to bloom, be green.

Ancestry of “duillechán”, step by step

StepLanguageWordMeaning
1Middle Irishduilleleaf; foliage; something resembling a leaf,...
2Old Irishduilneleaf; collective foliage
3Proto-Celtic*dolinyāa leaf
4Proto-Indo-Europeandʰelh₁-blossom; be green; to bloom, be green
Every word from Proto-Indo-European dʰelh₁- →Every word from Proto-Celtic *dolinyā →Every word from Old Irish duilne →