a greeting, like "yo" or "wassup", most commonly spoken between internet friends on IRC or other forms of chat.
<Neo> d00t
<Morpheus> Hey

by Anonymous October 31, 2003
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d00t (Düt)n. The anal area; the rectum and colon; the whole nine yards.
"That chick took it up the d00t last night, brah."
by Byers April 17, 2008
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