Main Entry: dead·line

Pronunciation: \-ˌlīn\

Function: noun

Date: 1864

1 : a line drawn within or around a prison that a prisoner passes at the risk of being shot
2 a : a date or time before which something must be done b : the time after which copy is not accepted for a particular issue of a publication

— on deadline or under deadline : with the requirement of meeting a deadline <working on deadline>