1 definition by Corina Annetta

Top Definition
Someone who takes or makes themselves obstacles in your way of you getting some action or a person you like or want.
Person 1: I really like Don, do you think I can get him?

Person 2: Mmm... probably but I just smashed him yesterday, sorry.

Person 1: Oh my gosh, you knew I liked him! You're such a cockblocker!!
by Corina Annetta March 14, 2011
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