- a dog trained to attack on command, as for protection or to aid in the apprehension of criminals.
Origin of attack dog
First recorded in 1965–70
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for attack dog
But he hurt himself with a chip-on-the-shoulder demeanor and attack-dog aggressiveness against Mitt Romney.Angry Obama Loses to Unflappable Romney
October 23, 2012