definitions
  • synonyms

ack.

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acknowledge.

Nearby words

acinus, acis, ack, ack-ack, ack-emma, ack., ackee, acker, ackey, acknowledge, acknowledged
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for ack

Word Origin and History for ack

ack


British oral code for letter A in wireless and telephone communication, 1898; hence ack-ack "anti-aircraft" (gun, fire, etc.).

Online Etymology Dictionary, © 2010 Douglas Harper