Top Definition
from the japanese sound effect for "meow" ("nya" in japanese) and the suffix "ko" used exclusively in japanese girls names(i.e.: Ayako, Sachiko): A Catgirl
Nyanko was a catgirl...
by Courtney June 23, 2003
1 more definition
The way someone tries to motion to have sex with them, but in a less explicit way instead of hey lets fuck! :D
hey wanna have some nyanko with me? itll be fun.
by 0nion June 30, 2003

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