work-hour

[wurk-ouuh r, -ou-er] /ˈwɜrkˌaʊər, -ˌaʊ ər/

noun

any of the hours of a day during which work is done, as in an office, usually between 9 a.m. and 5 p.m.

Origin of work-hour

1840-1850

First recorded in 1840-50

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