A baseball that is bigger than a usual baseball. Almost the size of a softball.
She hit the donker hard and scored a homerun.
by Nenothel October 26, 2007
A piece of poop, usually solid and log shaped.
"After I saw the poop in the pool, I grabbed the net and flung that donker over the fence."
by Kara and Justin January 12, 2006
a derrogatory term condoning foolishness or stupidity.
Your such a donker when you date online men.
by Steph.Nora January 01, 2006

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