Toggle 3 : A removable bar placed in the eye of a rope to prevent an object (e.g. a hook) from sliding off. A retaining device, linked to an operating rope by a short length of chain, to facilitate the attachment and removal of rings
Ministry of Business, Innovation and Employment, Glossary of terms and acronyms, Wellington, New Zealand 2010. http://wwwsosh.govt.nz/resources/glossary-u.shtml, (Occupn Hlth and Sfty - Brit) {530}