clock jack

noun

, Horology.

1. jack ¹( def 19 ).

Word History and Origins

Origin of clock jack¹

1925–30; earlier jack of the clock-(house) , jackaclock; jack ¹

Example Sentences

So he took the matter in hand and invented a clock-jack that was much better than the imported one.

From Project Gutenberg

There was the clock jack, two splendid specimens of which are illustrated in Fig. 42, types becoming exceedingly rare.

From Project Gutenberg