Shackle 1 : A length of steel rod bent into a 'U' shape, provided with eyes at each end through which a bolt is passed to close the loop. Used for connecting chains to hooks, etc
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}