Meaning

• A time period of sixty minutes; one twenty-fourth of a day.

  "I spent an hour at lunch."

• A season, moment, or time.

• The time.

  "The hour grows late and I must go home."

• (in the plural) Used after a two-digit hour and a two-digit minute to indicate time.

• (in the plural) The set times of prayer, the canonical hours, the offices or services prescribed for these, or a book containing them.

• A distance that can be traveled in one hour.

  "This place is an hour away from where I live."

Meaning

• Initialism of horizontal rule.