Top Definition
ack
a human onomatopoeic(sound)word to describe frustration or disgust.
"ACK!!! I have work today, It's going to be a bitch!"
de Emily Winters 5 janvier 2005

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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)
de Obi-Wan 9 décembre 2003

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Ack
airport call letters for Nantucket Memorial Airport.

Common abreviation for anything Nantucket.
Ack Attack - Have to get to Nantucket for vacation
de Chris ACK 7 juin 2005

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Ack
Nerdspeak for "yes" or "I hear you"
Usu. used on IM by programmers
"Is the latest patch on the source server?"
"Ack"
de mistervague 8 novembre 2003

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ACK
ACK is the call letters for Nantucket Airport, and thus ACK = Nantucket.
What does that "ACK" euro sticker mean? Nantucket.
de Fuzzwuzzy 10 mars 2005

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ACK
the airport call signal for nantucket...like you know, JFK or LAX
Tourist: "excuse me, what does ACK stand for?"
Exasperated Native: "It's the god damn call signal for the airport!"
de ooer 21 mai 2005

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ACK
The call letters for Nantucket Airport.

duh.
SON: Wow what do all those "ACK" bumper stickers mean?

DAD: Well son they are the call letters for Nantucket airport.

SON: Gee whiz dad! I wish I could be from Nantucket....

DAD: Don't we all son, don't we all- *sigh*
de Chain_Me_Free 7 décembre 2004

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