# Four-hundred-day clock

[fawr-huhn-druh d-dey, fohr-] /ˈfɔrˌhʌn drədˈdeɪ, ˈfoʊr-/

**noun**

1.

a clock that needs to be wound once a year, having the works exposed under a glass dome and utilizing a torsion pendulum.

Tagged: f

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