noun
: a mechanism for producing reciprocating motion consisting of a rack with teeth on both sides and around the ends or a row of pegs engaging a pinion that rotates continuously in one direction
noun
: a mechanism for producing reciprocating motion consisting of a rack with teeth on both sides and around the ends or a row of pegs engaging a pinion that rotates continuously in one direction
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012