synchromesh

[ sing-kruh-mesh ]
/ ˈsɪŋ krəˌmɛʃ /
Automotive.

adjective

noting or pertaining to a synchronized shifting mechanism.

noun

a synchronized shifting mechanism.
any of the gears of such a mechanism.

Origin of synchromesh

First recorded in 1925–30; synchro- + mesh

British Dictionary definitions for synchromesh

synchromesh
/ (ˈsɪŋkrəʊˌmɛʃ) /

adjective

(of a gearbox, etc) having a system of clutches that synchronizes the speeds of the driving and driven members before engagement to avoid shock in gear changing and to reduce noise and wear

noun

a gear system having these features

Word Origin for synchromesh

C20: shortened from synchronized mesh