going barrel

noun — 2 senses

going barrel

noun
1

Hobbies, Horology, Lifestyle A barrel containing the mainspring, with teeth on its periphery to drive the train.

2

Hobbies, Horology, Lifestyle A device for maintaining a force to drive the train while the timepiece is being wound up.

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.