Where does “Espeleta” come from?

Espeleta (Spanish) comes from Basque Ezpeleta, from Basque ezpel, from Proto-Basque ez-, from Proto-Indo-European eǵʰs — out; from, out of.

Ancestry of “Espeleta”, step by step

StepLanguageWordMeaning
1BasqueEzpeletaA surname​; Espelette
2Basqueezpelbox tree
3Proto-Basqueez-—
4Proto-Indo-Europeaneǵʰsout; from, out of
Every word from Proto-Indo-European eǵʰs →Every word from Proto-Basque ez- →Every word from Basque ezpel →