The Collaborative International Dictionary
Preventer stay
Preventer \Pre*vent"er\, n.
One who goes before; one who forestalls or anticipates another. [Obs.]
--Bacon.One who prevents or obstructs; a hinderer; that which hinders; as, a preventer of evils or of disease.
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(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.