Definition of queen mother in English English dictionary
A widowed queen consort (a queen dowager) whose son or daughter from that marriage is the reigning monarch
The Queen Mother is the mother of a ruling king or queen. A dowager queen who is the mother of a reigning monarch. the mother of the ruling king or queen. the mother of the British Queen Elizabeth II, whose official title was Queen Elizabeth, the Queen Mother. She was one of the most popular members of the royal family, and she was often called 'the Queen Mum' in British popular newspapers (1900-2002)