Bearing 3 : A device to support a shaft in its correct position and allow it to rotate with as little friction as possible. (See ball-bearing, bush, roller bearing)
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}