Proto-Basque: *gult- (in *gult-sur̄in)
Meaning: kidney
Bizkaian: kuntzurrun, guntzurrun, (Araba) gultzurrun
Gipuzkoan: gultzurrin, gultzurdun, gultzurdin, geltzurrin, giltzurrin
High Navarrese: giltzurdin, gultxurrun, (Lezaka) giltzurrin, (Esteribar) giltzurrun
Low Navarrese: giltzurdin, (Aldude) giltzurrin
Salazarese: giltzurrin, giltzurrun, giltzurdin
Lapurdian: geltzurrin, giltzurrin
Baztanese: gultxurrin
Zuberoan: gültzürrün
Roncalese: giltzurrin, beltzarrún, beltzurrún, beltxurrin, (Uztárroz) beltzurrin
Comments: *gult- exists only in compounds with *-sur̄in (q.v.). A bewildering array of variants, in which there are several secondary ‘folk-etymological’ associations with *urdin ‘blue, gray’, *gilc ‘joint’, and *belc ‘black’ (q.v.).
basqet-prnum,basqet-meaning,basqet-bzk,basqet-gip,basqet-anv,basqet-bnv,basqet-sal,basqet-lab,basqet-bzt,basqet-zbr,basqet-rnc,basqet-comments,