synchromesh

Noun

1.

synchromesh - an automotive system for shifting gears in which the gears revolve at the same speed and so shift smoothly

Hydromatic, automatic transmission, cogwheel, differential, differential gear, freewheel, gear, gear train, gearbox, gearing, gearshift, gearwheel, high, intermediate, low, neutral, overdrive, rack, reverse, standard transmission, stick shift, transmission