1. To ward off, repel (an attack or attacker).
  2. To prevent, to keep (from doing something).
  3. To prohibit, forbid.
  4. To ward off attacks from; to fight to protect; to guard.
  5. To support by words or writing; to vindicate, talk in favour of.
  6. To make legal defence of; to represent (the accused).
  7. To focus one's energies and talents on preventing opponents from scoring, as opposed to focusing on scoring.
  8. To attempt to retain a title, or attempt to reach the same stage in a competition as one did in the previous edition of that competition.
  9. To call a raise from the big blind.

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