n. A spider's web; from 'atter' (poison) and 'coppe' (cup). Often used to refer to the spider itself (as from Norwegian "edderkopp", meaning spider).
Old fat spider spinning in a tree!
Old fat spider can't see me!
Attercop! Attercop!
Won't you stop,
Stop your spinning and look for me?
Old Tomnoddy, all big body,
Old Tomnoddy can't spy me!
Attercop! Attercop!
Down you drop!
You'll never catch me up your tree!

- J. R. Tolkein's "The Hobbit", Ch. VIII
by Markus Melarkus September 29, 2005
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Comes from Northern England e.g Manchester. Used to describe a moth that is abnormally large.
Person 1: Ahhhhhhhhhhhhh theres an attercop on the wall!
Person 2: Its just a little moth, calm it!
Person 1: No its and attercop! its to big to just be a moth!
by PHANforever June 01, 2014
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