Function: noun
Date: 1869
: a train (as of gear wheels) designed to have one or more parts travel around the circumference of another fixed or revolving part
Function: noun
Date: 1869
: a train (as of gear wheels) designed to have one or more parts travel around the circumference of another fixed or revolving part
Merriam Webster Collegiate English Dictionary. Merriam Webster - Энциклопедический словарь английского языка. 2012