(sports) Additional time added to the end of a match, or period of a match, in order to compensate for time lost due to any stoppages of play.

Someone who wastes their own or others' time. / Something unproductive. / Something which passes the time that may or may not be seen positively.

Time when one is not working.

What is the time of day? (used to request for the current hour and approximate number of minutes after the hour)

The time interval between the instant of the occurrence of a specified input condition to a system and the instant of completion of a specified operation.

(idiomatic, sarcastic) Used to express impatience at the eventual occurrence of something that the speaker or writer considered to be long overdue.

(chiefly science fiction) Hypothetical or fictional travel to the past or the future, typically by means of a machine (a time machine) or a wormhole.

One who engages in time travel.

(chiefly science fiction) A hypothetical device used to travel into the past or the future.

(idiomatic) At the last possible moment; at the last minute.