To knock someone out with one punch or beat someone up badly landing a particularly hard punch to the face.

Originated in Leeds
Person 1: Did you see the fight?
Person 2: Yeah he gave him a right Gully Wombat, knocked him out cold
by Mhlds April 12, 2021
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To knock someone out with a single punch
James: "I saw Josh Warrington once at headingley stadium, I thought he was going to gully wombat me"

"Did you see that fight last night?"
"Yeah, he gave him a right gully wombat"
by Mhlds March 24, 2021
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