WAMPEE
pickerelweed, pickerel weed, wampee, Pontederia cordata
(noun) American plant having spikes of blue flowers and growing in shallow water of streams and ponds
Source: WordNet® 3.1
Etymology
Noun
wampee (plural wampees)
A tree, Clausena lansium, cultivated in China and the East Indies.
The fruit of this tree.
Source: Wiktionary
Wam*pee", n. (Bot.)
(a) A tree (Cookia punctata) of the Orange family, growing in China
and the East Indies; also, its fruit, which is about the size of a
large grape, and has a hard rind and a peculiar flavor.
(b) The pickerel weed. [Southern U.S.]
Source: Webster’s Unabridged Dictionary 1913 Edition