Proto-Basque: *ok-
Meaning: 1 plum 2 sloe
Bizkaian: ok-aran 1, txarri-ok-aran 2
Gipuzkoan: (Etxarri-Aranaz) ok-aran 1
Comments: A compound with *ar=han, q.v. *ok-arhan may orig. have designated the cultivar plum (cf. Lak aq ‘garden’, etc.) as opposed to wild plums and sloes.