Txistu (-)
(with) definite article: TxistuaNB: Unfortunately, the reference to the "mother" term (➺ above) is represented by a question mark only, because its singular form is (yet) unknown to me... When clicked on, however, it shows the concerning entry (lemma) as usual.
Barrenechea (Barrenetxea), (Jose) Mariano: Alboka: entorno folklórico (Colaboración de P. Jorge De Riezu), Bilbao, 1976, p.167.