Meaning of gun tackle

gun' tack"le

Pronunciation: [key]
— Naut. Naut.
  1. a tackle composed of a fall rove through two single blocks and secured to one of them so as to secure a mechanical advantage of two or three, neglecting friction, depending on the arrangement. See diag. under
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.