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
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