Citations:grass top

Noun: "the tip of a blade or stalk of grass"

 * 1910 — Theodore Roosevelt, African Game Trails: An Account of the African Wanderings of an American Hunter-Naturalist, Charles Scribner's Sons (1910), page 521:
 * There was nothing to shoot at; but a moment afterward I saw a pair of horns through the grass tops, in such a position that it was evident the owner was looking at me.
 * 1945 — Russell Gordon Carter, "Osceola's Third Plume", Boys' Life, July 1945:
 * Motionless again, only his brown cap showing above the grass tops, he fixed his gaze on an open space some two hundred yards ahead.
 * 1945 — John Joseph Matthews, Talking to the Moon: Wildlife Adventures on the Plains and Prairies of Osage Country, University of Oklahoma Press (1981), ISBN 9780806120836, page 235:
 * I could see by the waving grass tops that the wind was out of the south, and this gave me an idea.

Noun: "an expanse covered in grass"

 * 2004 — David Walsh, Oileán: A Guide to the Irish Islands, Pesda Press (2004), ISBN 0953195694, page 172:
 * The grass top is extensive and sheep-grazed.
 * 2008 — Chris Fabry, Dogwood, Tyndale (2008), ISBN 9781414319551, page 154:
 * She glides along, her skirt touching the grass top as she sways to the beat of unwritten songs.
 * 2010 — David Novis, How to Succeed as a Soccer Parent: Development vs. Destruction, Tate Publishing & Enterprises (2010), ISBN 9781615667284, page 122:
 * Daisy cutter: the ball skims along the grass top in a straight line, in theory knocking off the heads of the daisies.