Top Definition
A metaphorical card that one loses upon engaging in sexual intercourse in the library.
Kate took John's library card in the stacks last night!
by lbeesntdeirx February 19, 2013
a plastic card that enables one to have fun in circumstances related to the dewey decimal system
Because having fun isn't hard, when you've got a library card!
by Arthur Reid January 02, 2012
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