PREVENTER
Etymology
Noun
preventer (plural preventers)
One who, or that which, prevents.
(nautical) An arrangement, made with ropes and blocks, that prevents the boom of a sailing boat from performing a jibe.
(nautical) Any of various lines set up to reinforce or relieve ordinary running or standing rigging.
Source: Wiktionary
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.)
Definition: An auxiliary rope to strengthen a mast. Preventer bolts, or
Preventer plates (Naut.), fixtures connected with preventers to
reënforce other rigging.
– Preventer stay. (Naut.) Same as Preventer, 3.
Source: Webster’s Unabridged Dictionary 1913 Edition