call-off

Short definition from Wiktionary

Noun

1. 1
   A day on which an employee has called off.
2. 2
   A call given to a trained dog to tell it to stop doing something.
3. 3
   Synonym of blanket order.

Verb

1. 1
   To recall; to cancel or call a halt to.
2. 2
   To telephone in one's notice of a day's absence from work.