Ack

In the TCP protocol, the receiving computer sends an ACK (acknowledgment) to the sending computer. This is basically how a coonection is established.

Sender sends 3 packets, Receiver receives 3 packets and sends "ACK 4" (meaning it received what was sent, and it's ok to send the next number or packet)

by Obi-Wan December 9, 2003

Ack

The natural sound someone makes when choking

Person 1: ACK ACK ACK
Person 2: Are you ok?

by Still chill still chill February 21, 2020

Ack

airport call letters for Nantucket Memorial Airport.

Common abreviation for anything Nantucket.

Ack Attack - Have to get to Nantucket for vacation

by Chris ACK June 15, 2005

ack

a human onomatopoeic(sound)word to describe frustration or disgust.

"ACK!!! I have work today, It's going to be a bitch!"

by Emily Winters January 5, 2005

ack

Ack is a word to describe excrement or poo. It can also be used an adjective to describe something with poo-like associations- see Acky.

Where's the toilet? I need to do an ack.
I wouldn't go in there, someone just did an ack.

by damon goss October 5, 2011

ACK

ACK is the call letters for Nantucket Airport, and thus ACK = Nantucket.

What does that "ACK" euro sticker mean? Nantucket.

by Fuzzwuzzy March 10, 2005

ACK

Something you say like a funny noise in a text, or in real life when you are acting retarded.

*commits die* ACK ACK AKK ACK ACK

by Ihatmylife October 9, 2019