資料來源 : Webster's Revised Unabridged Dictionary (1913)

Preventer \Pre*vent"er\, n.
   1. One who goes before; one who forestalls or anticipates
      another. [Obs.] --Bacon.

   2. One who prevents or obstructs; a hinderer; that which
      hinders; as, a preventer of evils or of disease.

   3. (Naut.) An auxiliary rope to strengthen a mast.

   {Preventer bolts}, or {Preventer plates} (Naut.), fixtures
      connected with preventers to re["e]nforce other rigging.
      

   {Preventer stay}. (Naut.) Same as {Preventer}, 3.