χερνιβεῖον

τό
A. vessel for water to wash the hands, basin, τὸ χ. πρῶτον, ἡ πομπὴ σαφής Antiph. 66, cf. IG 22.1400.41, al., Michel 832.46 (pl., Samos, iv B. C.).
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project