thwart

  1. Verb.  (transitive) to prevent; to halt; to cause to fail; to foil; to frustrate.
  2. Noun.  (nautical) A brace, perpendicular to the keel, that helps maintain the beam (breadth) of a marine vessel against external water pressure and that may serve to support the rail.
  3. Noun.  (nautical) A seat across a boat on which a rower may sit.

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