Definition of "wall-clock" [wall-clock]

• Attributive form of wall clock (noun)

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• "I pressed the controller's green button and ViewNet obliged by streaming an elaborate image into my optic nerves: a small classroom complete with a wall-clock, a chalkboard, windows revealing someone's conception of a typical schoolyard, and a row of bizarre students seated at old-fashioned desks."
• "We got to work in the working group and I am very happy to announce that as of today there is now a draft specification for addressing time offsets by wall-clock time."
• "I would love to have a wall-clock version of this."