The meaning of the Acronym JACK is...

JACK is

• Just Another Concurrency Kit
• Jack Audio Connection Kit

More Meanings For JACK:

• Just Another Concurrency Kit
• Jack Audio Connection Kit
• Jack Audio Connection Kit
• Just Another Contract Killer
• Golden Bear Golf, Inc. ( Jack Nicklaus)
• Computer generated icons

JACK is also in:

• Electronics
• General
• Military
• Names and Nicknames
• NASDAQ Symbols