ack

plural acks · alternative ACK

1. historicalgovernmentThe letter A as used in signalling and other types of communications.

   They had to begin at the beginning: learning the Morse code, flag-wagging, a succession of acks, and practice on the buzzer.

   1929, Frederic Manning, The Middle Parts of Fortune, Vintage, published 2014, page 173

2. data communicationsacknowledgment signal

present singular third person acks · participle present acking · participle past acked · past acked

1. alternativeAlternative form of ACK.

1. broadcastingacknowledged

1. Expressing distaste, alarm, or trepidation.
2. offensive4chan slangMocking a transgender person by imitating the sound of choking during a suicide by hanging, evoking the notion that transgender people frequently commit suicide.

   ACK!

   2021 September 22, anonymous author, 4chan, /qa/

   4 more examples

   >...ACK!

   2021 September 23, anonymous author, 4chan, /qa/

   Hahaha Nooo dad why won't you accept me for my true self noooo ....BLURK.. ack ack

   2021 September 23, anonymous author, 4chan, /qa/

   Ack!

   2021 September 23, anonymous author, 4chan, /fit/

   >Im so glad i transitioned >Time to look myself in the mirror >... >... >...ACK!

   2021 September 24, anonymous author, 4chan, /qa/

present singular third person acks · participle present acking · participle past acked · past acked

1. offensivereflexive4chan slangTo commit suicide.

   Ack yourself.

   Kill yourself.

plural ACKs · alternative ack

1. computingAn acknowledgement either of a packet or a message received from a network.

present singular third person ACKs · participle present ACKing · participle past ACKed · past ACKed · alternative ack

1. computingTo acknowledge a packet or a message received from a network.

   Yet, with full ECN nonce functionality and totally unreliable behaviour, ACKing individual packets only would require the receiver to maintain state that could theoretically grow without bounds.

   2005, Michael Welzl, Network Congestion Control: Managing Internet Traffic, page 150