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1.
(DAUD-er) a pen that ceases to function while it is being used for something of upmost importance, such as writing a term-paper that is due in twenty minutes. can also be used to describe a person who refuses to do anything when he/she is needed.
This paper is due in twenty minutes and this dodder is really pissing me off.

my brother is a mechanic but he can be such a dodder sometimes. last week my car broke down and he refused to help me fix it.
by saycock May 29, 2007
 
2.
a racist term used in the united kingdom to describe black people.
did you see that fucking dodder over there?
by kingkoopa June 22, 2013