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A dynamic link library that contains functions that other programs can execute freely. There are a few uses for dlls...

1. Sometimes programmers create dlls with a complex language so other programmers working with a easy language can make their program load the dll and enjoy some benefits of the more complex language.

2. Sometimes they are created so instead of having a huge main file the central program can be a small core and call it's main functions through dlls.
Don't delete those fucking dlls, other programs fucking need them.
by andrewmc August 17, 2005
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Drunk Lesbian Lovers

bitches that fake drunk, WANNA be whores, and are totally obnoxious because they think guys are attracted to them.
OMGGZzZZzzzZ LYKE WE'RE DLLS OMGZ
by getatmeeeeee69 January 26, 2011
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Annoying ass files that screw up and don't let me run programs and end up crashing my computer!
oh shit! rundl.dll won't work and now i have to reformat my compupter! god damn you, dll!
by Nexus November 29, 2004
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Designated Lesbian Lover; girls who plan to get married (or just date) after a period of time of being single
Samantha: "In ten years if I'm not married yet will you be my DLL?"
Rebecca: "Sure!"
by underhr November 10, 2017
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