lavatory

[1]	toilet , water-closet , WC , lav , can , toilet , bathroom , john , privy , (Colloq) (Brit) the Gents , bathroom , the Ladies(') , Men's (Room) , rest room , privy , (Mainly Military/Institutional) latrine , (Nautical) head , (Brit) (public) convenience , (US) equipment , outhouse , (Colloq) (little) boys'/girls' room , powder-room , (Brit) loo , lav , (US) can , (Slang) (Brit) bog
[2]	washbasin , basin , washbowl , washstand
[3]	flush toilet