half-time

Short definition from Wiktionary

Noun

1. 1
   The interval between the two halves of a sports match.
2. 2
   Half or approximately half the number of hours usually worked in a specified period.
3. 3
   A tempo in which the rhythm is emphasized so that it seems to have half as many metric divisions (e.g. emphasizing the start of every other bar rather than every bar).
4. 4
   The time taken for a physical quantity to halve the difference between its present value and its final value.
5. 5
   Alternative spelling of half-time.

Adjective

1. 1
   Pertaining to or characterized by half the usual duration.

Adverb

1. 1
   In a half time manner.