Yoncopin

• (n.) A local name in parts of the Mississippi Valley for the American lotus (Nelumbo lutea).
Found on http://thinkexist.com/dictionary/meaning/yoncopin/

Yoncopin

Yon'co·pin noun [ Perhaps corrupted from Illinois micoupena , Chippewa makopin , the American lotus.] (Botany) A local name in parts of the Mississippi Valley for the American lotus ( Nelumbo lutea ).
Found on http://www.encyclo.co.uk/webster/Y/6
No exact match found