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clock jack

noun Horology.
  1. jack1(def 19).
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Origin of clock jack

1925–30; earlier jack of the clock-(house), jackaclock; see jack1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for clock jack

Historical Examples

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

    Christopher and the Clockmakers

    Sara Ware Bassett