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a) The hour on a 12 hour clock.

b) The position of something to you, 12 O'clock being straight ahead, six being behind, 3 O'Clock 90 degrees clockwise and 9 being 90 degrees anti-clockwise.
The time is 9 O'clock (well, 21:29) and having found no good tv, I turned on the PC and defined this word and a half.

Charlie at five o'clock sir!
by Kung-Fu Jesus May 09, 2004
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May 8 Word of the Day
1. Slight sins or offenses
2. Petty crimes or small infractions
3. Las Vegas Punk Rock!
Peccadilloes shows rule.
by James Messina August 11, 2006
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When an attractive female is in the room and your bro hasn't noticed you say the time, if the girl is directly behind your bro it would be 6 o'clock, remeber always say the time according to his view not yours
Lewis: Bro check your six o'clock, nine outta ten
Will: damn, i give her ten outta ten
by Orlando all the way November 02, 2009
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The time at which people have sex in an office.
Secretary: "It's time!"
Principle: "Thank heavens its O'clock!"
by Martin Bryan August 15, 2005
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