1 definition by Dr. Joseph Junio

Top Definition
When a friend disarms your efforts towards a girl. Short for cock-block.

A successful undertaking of a person out to get a better shot at a friend's intended target.
"She was definetly looking at me man, but mark cblocked me and I was hosed"

"Jorge was such a cblock last night, he would not leave me and her alone."
by Dr. Joseph Junio January 21, 2004

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