1. sign off - Noun
2. sign off - Verb
cease broadcasting; get off the air; as of radio stations
Source: WordNetsign-off
If He wasn't going to use that hard thing for your good, it wouldn't have happened. He had to sign off on every single thing that touches your life. James MacDonald
I'd learn that it's not just where you go, but how you choose to get there. So I pulled that sign off the green bike - ENJOY YOUR RIDE! - and went inside to take the first step toward doing just that. Sarah Dessen
A judge has yet to sign off on the request. Source: Internet
Anonymous – The worst part about it, is that you can never pin anything on a minister under the current law as they don’t sign off on the cheques and procurement its the PS and civil servants like this poor chap Kapoko. Source: Internet
Another par on the final hole saw him sign off for his best score in Abu Dhabi – a stunning 66 to sit two-strokes behind joint-leaders Renato Paratore and Shaun Norris at the end of the first round. Source: Internet
Any winners under the age of 18 must have a parent or guardian present to complete a W-9 tax form and sign off on behalf of the minor. Source: Internet