cooldown

Short definition from Wiktionary

Noun

1. 1
   The rest period between sets or workout sessions, when cooling of body temperature may occur.
2. 2
   Any rest period between sessions of an activity or event.
3. 3
   Any rest period between sessions of an activity or event: The minimum length of time that the player needs to wait after using an ability or item before it can be used again.
4. 4
   The minimum length of time that the player needs to wait after using an ability or item before it can be used again: A particular ability with a powerful effect but long cooldown period, making it important to track when it was last used and when it can be used again.