Top Definition
Very very early in the morning, right before the crack of dawn.
God I'm tired, that damned dog woke me up at the buttcrack of dawn
by Blake November 11, 2002
Photos & Videos
early morning sunrise over the mountains
I've been up since the butt crack-of-dawn.
by Emmy November 25, 2003
An early time of awakening for those that usually get up around noon. Thus, the time would be something like 10-11 a.m. or so.
Lou: What time did you get up?
Stu: Today it was like the crack of dawn for me! Like 11 a.m.
Lou: Dude, that's more like the butt crack of dawn.
by Pie Lady February 14, 2006
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