ACK

Ack is sometimes used as an exclamation, an onomatopoeia for disgust, or as choking on something foul.

Ack ack is a term for anti-aircraft artillery fire.

ACK as an abbreviation that may refer to:
* ACK (computing), a signal used in computing and other fields to indicate "ack"nowledgement, including:
** ACK (TCP), a packet message used in the Transmission Control Protocol to acknowledge receipt of a packet.
** Acknowledge character, a control character used in ASCII.
** ACK (domain transfer), term used in transfer of domains.
* Acklington railway station (National Rail: ACK), a rail station in the United Kingdom.
* Nantucket Memorial Airport (IATA code: ACK), a Massachusetts airport (referring to Nantucket Memorial Airport).

ACK as a three-letter acronym that may refer to:
* Amsterdam Compiler Kit, a compiler suite used in Minix.
* Arbeitsgemeinschaft Christlicher Kirchen, a German Christian church.

ack is the name of a grep-like command-line tool built for software development environments.

ee also

* Acknowledgment

ACK : A Choi Kangkyu investment company