29
1. Someone who stops someone from having any type of relationship with someone else due to reasons of jealousy or anger.

2. Someone or something who stops sex from occuring with thier presence, accident or not.
1a. A girl who is ugly and/or fat who has a pretty friend. She stops guys from dating this pretty girl because she thinks 'if I can't, than niether can you'. What a bitch.

1b. A girl who is ugly and fat who got rejected by a man. She then spreads rumours and lies to anyone the man has his eye on trying to get them to reject him. WHAT A BITCH

2. A kid wants to score but his parents are always around, never leaving an opportunity. They are cock blocking.
by Cybernetico January 01, 2005
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30
one who prevents the cock from being unleashed upon a woman.
I had a hot girl in the room, but Alex would not quit playing WoW and subsequently became a cock block.

Me: "Alex...girl...in...room.."
Alex: "no, one more raid, there's a hot sorceress in here, i think she wants to get into my pixel pants."
by DeerPark1515 November 30, 2006
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31
n. A person who cannot stand the site of a friend getting laid and therefore has to prevent any possiblity of this happenning.
My friend Crookshanks is such a cock block, he should wear shoulder pads when he goes out to the bar.
by Don't you want to know May 28, 2005
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32
to interfere with a man trying to pick up a girl.
((Mike is Hitting on a Girl as Bobby Yells Across The Room))
Bobby : "Hey Mike did you get your herpes medicine yet?"
Mike : "Man, why you always tryna cock block me?!"
by xxcHoLa May 24, 2006
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33
The act of a large entity using their market influence to prohibit you from gaining access to a desired market.
e.g. Why does Microsoft have to come up in my house and cock block my access to that sales channel.
by retepa April 26, 2007
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34
tha fat ugly bitch that every group of fine ladies comes equipped with. she blocks all cock, unless she gets some too
man1: Yo it's your turn to keep the cock block occ upied son.
man2: Werd take one for the team.
man3: FUCK.
by borita August 10, 2003
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35
An all male dorimtory hall in college
by Anonymous November 04, 2003
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