time flies (time seems to pass quickly)

to waste time (to spend time in an unproductive manner)

(chiefly science fiction) time travel (hypothetical or fictional travel to the past or future)

(physics) absolute space-time (Newtonian concept of an unchangeable reference system of time and spatial coordinates)

(idiomatic) about time (it is far past the desired time)

weather forecast (prediction of future weather)

free time (time that can be spent on one’s own activities rather than work)

time and tide wait for no man

(data processing) time series

(sports) half time (interval between halves of a match) / (by extension) an interval of time between two events