Definition of Ma Bell in English:

Ma Bell

noun

informal
  • A nickname for the American Telephone and Telegraph Corporation.

    • ‘We've done this before: to the railroad trusts in the first part of the 20th century, to Ma Bell more recently.’
    • ‘It reminds me of the '60s when everyone's goal was to defeat the ‘establishment’ through fairly harmless guerrilla tactics such as not putting a stamp on the envelope when paying a Ma Bell phone bill.’