Hypertext Webster Gateway: "redtop"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Redtop \Red"top`\ (-t?p`), n. (Bot.)
A kind of grass ({Agrostis vulgaris}) highly valued in the
United States for pasturage and hay for cattle; -- called
also {English grass}, and in some localities {herd's grass}.
See Illustration in Appendix. The tall redtop is {Triodia
seslerioides}.
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