Hour Definition & Meaning | Britannica Dictionary
https://www.britannica.com/dictionary/hour
weba : the time shown on a clock or watch. The hour [= time] is half past ten. [=10:30] We arrived just as the clock struck the hour. [=we arrived at exactly 12:00, 1:00, 2:00, etc.] ( US) The program is scheduled to start at the top of the hour. [=at the beginning of the hour; at 12:00, 1:00, 2:00, etc.]
DA: 27 PA: 23 MOZ Rank: 73