“O’clock” is a shortened form of the phrases “of the clock” and “of clock,” which people began using to communicate the time ...
While the analog clock has fallen out of fashion, it does reveal what the "o" in "o'clock" means.
Educator Ruth Mork teaches kids about clocks — from sundials to cuckoo clocks to roosters. Ruth Mork introduces clocks of all kinds — sundials, candle clocks, hourglasses, cuckoos, even a rooster! She ...