'Preventer bolts' definitions:

Definition of 'Preventer bolts'

From: GCIDE

Preventer \Pre*vent"er\, n.
1. One who goes before; one who forestalls or anticipates another. [Obs.] --Bacon. [1913 Webster]
2. One who prevents or obstructs; a hinderer; that which hinders; as, a preventer of evils or of disease. [1913 Webster]
3. (Naut.) An auxiliary rope to strengthen a mast. [1913 Webster]
Preventer bolts, or Preventer plates (Naut.), fixtures connected with preventers to re["e]nforce other rigging.
Preventer stay. (Naut.) Same as Preventer, 3. [1913 Webster]