Definition of full and by in English:

full and by

phrase

Sailing
  • Close-hauled but with sails filling.

    • ‘Eagle was sailing full and by under her uppers, lowers, and course sails, plus the headsails.’
    • ‘For example, in a fresh gale, a well-conditioned man-of-war could just carry in chase, full and by, treble-reefed topsails, etc.’
    • ‘We are steering full and by and watch securing gear round the decks.’