guinea grass  From The Collaborative International Dictionary of
English v.0.48:  Guinea \Guin"ea\ (g[i^]n"[-e]), n.    1. A
district on the west coast of Africa (formerly noted for
its export of gold and slaves) after which the Guinea
fowl, Guinea grass, Guinea peach, etc., are named.       [1913
Webster]     2. A gold coin of England current for twenty-one
shillings       sterling, or about five dollars, but not coined
since the       issue of sovereigns in 1817.       [1913
Webster]              The guinea, so called from the Guinea gold
out of             which it             was first struck, was
proclaimed in 1663, and to go             for twenty shillings;
but it never went for less             than twenty-one
shillings.            --Pinkerton.       [1913 Webster]
Guinea corn. (Bot.) See Durra.     Guinea Current (Geog.), a
current in the Atlantic Ocean       setting southwardly into the
Bay of Benin on the coast of     Guinea dropper one who cheats
by dropping counterfeit       guine