意味: ツバn. saliva, clear watery liquid secreted into the mouth by the salivary glands (aids in taste and swallowing, begins the digestion of starches)n. (Hira=つば, Kanji=唾) saliva, sputum, clear watery liquid secreted into the mouth by the salivary glands (aids in taste and swallowing, begins the digestion of starches)