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acorn cup
a c o r n c u p hex:#97;#99;#111;#114;#110;#32;#99;#117;#112;
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- Acorn cup - - The involucre or cup in which the acorn is fixed.
- Valonia - n. - The acorn cup of two kinds of oak (Quercus macrolepis, and Q. vallonea) found in Eastern Europe. It contains abundance of tannin, and is much used by tanners and dyers.