preventer

  1. Noun.  One who, or that which, prevents.
  2. Noun.  (nautical) An arrangement, made with ropes and blocks, that prevents the boom of a sailing boat from performing a jibe.
  3. Noun.  (nautical) Any of various lines set up to reinforce or relieve ordinary running or standing rigging.

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This entry was last updated on RefTopia from its source on 3/20/2012.