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(noun) The gap created in a button-down blouse when a chick slumps forward allowing you to see her bra and varying degrees of her cleavage.
Dude, she was sporting some serious tit window... and wearing a Hello Kitty bra.
by aezrael June 01, 2009
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2
An otherwise normal woman's shirt with a completely pointless hole in the middle, below the neckband, specifically designed to display her cleavage. Not to be confused with a regular low-cut shirt.
It's fine to wear short shorts and a tank top and say you aren't asking for attention, but if you say the same thing while wearing a shirt with a tit window you need to shut the fuck up.
by AntonioCastagnoli September 09, 2016
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