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Definition of whitetop
1a(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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Time Traveler for whitetop
The first known use of whitetop was in 1803
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