16/05/2019 8:12:00 16/05/2019 8:12:00 Defmean

16/05/2019 8:12:00 Ack-ack Ack-ack

Ack-ack

What is Ack-ack?

Ack-ack definition and meaning on Dictionary terms:
noun Informal. (esp. during World War II)