ack

exclamation3

1. •
   Expressing distaste, alarm, or trepidation.
2. •
   acknowledged
3. •
   (offensive) Mocking 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

noun2

1. •
   acknowledgment signal
2. •
   (historical) The 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

verb[with oneself]1

1. •
   (offensive) To commit suicide.

   • Ack yourself.

noun1

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

verb1

1. •
   To 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