Proto-Basque: *čehume / *sehume / *senhe
Meaning: 1 half-span (thumb to forefinger) 2 span (thumb to little finger)
Low Navarrese: xehume 1, zehe 2
Lapurdian: zehe 2, (Ainhoa) xeun 1, (Ainhoa, Senpere) zehume 2
Baztanese: zee 2
Zuberoan: xehǘne 1, zẽ́hẽ 2
Roncalese: xeme 1, ze 2, (Uztárroz) txeme 1
Comments: A NE Bsq isogloss: cf. SW Bsq *a=r̄ae 'span' (q.v.). Tentatively: *sehume 'span' was original (with a metathetic variant *senhe), and the diminutive was *čehume 'half-span'. If so, PNC *č̣V̆mħV was originally a diminutive and the augmentative (**ǯV̆mħV ?) was lost. But this is speculative. In this model Bsq *senhe 'small, tiny' (q.v.) is an unrelated homonym of *senhe 'span'.
