hour

noun

Etymology: From Middle English houre, hour, oure, from Old French houre, from Latin hōra (“hour”), from Ancient Greek ὥρα (hṓra, “any time or period, whether of the year, month, or day”), from Proto-Indo-European *yóh₁r̥ (“year, season”). Akin to Old English ġēar (“year”). Doublet of hora and year. Compare horary. Partly displaced native Old English tīd (“time, hour”), whence Modern English tide.

1. A unit of time of one twenty-fourth of a day (sixty minutes).

   “Holonyms: day < week < megasecond < fortnight < month < year < gigasecond < century < kiloannum, kiloyear, millennium < terasecond < mega-annum, megayear < petasecond < giga-annum, gigayear < exasecond < zettasecond < yottasecond < ronnasecond < quettasecond”

   “Meronyms: quectosecond < rontosecond < yoctosecond < zeptosecond < attosecond < femtosecond < picosecond < nanosecond < microsecond < millisecond < centisecond < decisecond < second < decasecond < minute < hectosecond < kilosecond”

2. A season, moment, or time.

   “Don't come home ever again at this unearthly hour.”

   “From childhood's hour I have not been / As others were; I have not seen / As others saw; I could not bring / My passions from a common spring.”

3. The time.

   “The hour grows late and I must go home.”

4. Used after a two-digit hour and a two-digit minute to indicate time.

   “By 1300 hours the position was fairly clear.”

5. The amount of labor demanded by an employer in terms of time.

   “I asked my manager for more hours.”

   “The shop wasn't giving me enough hours so I started searching for a second job.”

6. The set times of prayer, the canonical hours, the offices or services prescribed for these, or a book containing them.
7. A distance that can be traveled in one hour.

   “This place is an hour away from where I live.”