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Old military (Naval) slang for a person who avoids their responsiblities, or is work-shy. What may latterly be termed a "skiver".
For all those scrimshankers who've yet to hand in their assignment, you have just two days left!
by Rob the Ninja Assassin February 21, 2006
A person who is tight-fisted and tries to avoid paying their share for anything
Arther: Has Horace bought a round yet?
Bruce: No. He never does.
Arthur: What a fat scrimshanker!
by Subbuteo July 15, 2003