To make a 'gack' noise.
To expectorate a hairball.
The sound of a cat coughing up a hairball.
Also used of similar noises, particularly one made to show disgust or disapproval.
Origin: Apparently from the sound made; believed to have first appeared in comic strips.
What does GACK stand for? -- Explore the various meanings for the GACK acronym on the Abbreviations.com website.
The numerical value of gack in Chaldean Numerology is: 9
The numerical value of gack in Pythagorean Numerology is: 4
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