toothcup
nounDefinition of toothcup
1
: a low-growing North American herb (Rotala ramosior) found on sandy shores and having solitary flowers and regularly splitting capsules
2
: a low herb (Ammania coccinea) of the family Lythraceae chiefly found in southern U.S. and having narrow leaves and flowers in clusters of two, three, or several in the leaf axils