Definition of whitetop
1 a (1)
: a redtop (Agrostis alba)
(2)
: a grass (Fluminea festucacea) of northwestern North America that is an important source of food for wild birds
(3)
or less commonly
white topped grass
: any of several grasses of the genus Danthonia (especially D. pilosa)
b
: fleabane
c
: any of several Australian eucalypts;
especially
: a widely distributed blackbutt (Eucalyptus pilularis)
d
: hoary cress
2
: a covered wagon with a white top
