WASHDAY Meaning of WASHDAY in English wash ‧ day /ˈwɒʃdeɪ $ ˈwɒːʃ-, ˈwɑːʃ-/ BrE AmE noun [uncountable and countable] old-fashioned the day each week when you wash your clothes Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012