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Clock

/klɒk/

Today’s word is River.

An antique clock
An antique clock. Photograph by Invantory.com. CC BY-SA 3.0, via Wikimedia Commons.

What it means

  • noun

    An instrument used to measure or keep track of time; a non-portable timepiece.

  • noun

    The odometer of a motor vehicle.

    “This car has over 300,000 miles on the clock.”

  • noun

    An electrical signal that synchronizes timing among digital circuits of semiconductor chips or modules.

Where it comes from

Clock comes from medieval Latin clocca, a bell, by way of Middle Dutch clocke. The first clocks told the hour by ringing, so the name of the bell became the name of the machine. English already used clock for a bell before it had clockwork.

In a sentence

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