Proto-Basque: *ɦardo
Meaning: tinder
Bizkaian: (Araba) erdai
Gipuzkoan: (Zegama) arda-gai
Low Navarrese: ardai
Lapurdian: hardo
Zuberoan: ardai
Comments: Base form *ɦardo, other forms compounded with *gai 'thing, material' (q.v.). Azkue explains that this tinder is made from a kind of fungus (amadou). This word was secondarily confused and blended with Bsq gardu, kardu 'thistle', which is distinct and a loanword from Romance (carduus).
