1 definition by MR. KNOWITALL69

Top Definition
An attractive woman with nice ROUND curves, hence the word rounder. Can be used in short as "der". Can also refer to any attractive woman depending on the persons tastes or interest
Check out that rounder over there!
Did you take that rounder home last night?
This place is stacked with ders!
Did you see that der sitting over there?
by MR. KNOWITALL69 April 29, 2011
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