WordDictionary

Noun:

• uncountable|slang The serving of a prison sentence.
• countable A measurement of a quantity in time; a numerical or general indication of a length of progression.
• countable An era; (with ''the'', sometimes in plural) the current era, the current state of affairs.
• countable An experience.
• countable An instance or occurrence.
• countable A numerical indication of a particular moment.
• countable A particular moment or hour; the appropriate moment or hour for something (esp. with prepositional phrase or imperfect subjunctive).
• countable Ratio of comparison.
• countable The measurement under some system of region of day or moment.
• uncountable A quantity of availability in time.
• uncountable How much of a day has passed; the moment, as indicated by a clock or similar device.
• uncountable The inevitable progression into the future with the passing of present events into the past.
• uncountable (with possessive) A person's youth or young adulthood, as opposed to the present day.

Verb:

• To choose how long something lasts.
• To measure seconds, hours etc passed, especially using a clock of some kind.