Direct Client Connection, a protocol used on IRC to send files between users, create private chats, and make a whiteboard for shared drawing. The DCC handshake is sent through the server (with CTCP), but the file/chat/whiteboard session takes place over a direct connection between the clients--hence the name.

Can also be used as a verb, meaning to send a file using DCC.
"Hey man, DCC me that video of Fred Durst eating his own shit."
by NSFMr2K December 29, 2004
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Dcc is short for Dutch comic con. It's a convention in the Netherlands.
by That one dino... October 6, 2020
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Designated Corner Camper (kid at the party who sits in the corner and talks to no one) “where the bitches at”
Bro yea Kyle is a DCC
by Yur123 August 7, 2023
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