American Heritage Dictionary
(1)
Century Dictionary
(1)
GNU Webster's 1913
(1)
WordNet
(1)
Elsewhere on the web
The development will further cement Madison Square Park as an actual residential neighborhood-even if you'd be hard pressed to believe it at noon on a Wednesday, when the greensward is packed with 20-something creative types employed in the surrounding Class B office shanties.— Home | The New York Observer
The booted stomping through the greensward, the jungly target shooting?— NewsBusters.org - Exposing Liberal Media Bias
Next, the sick having been temporarily disposed of, there followed the strong and able-bodied, who took ashore with them spars, tackles, and spare sails, with which to rig up temporary tents; and soon the greensward was dotted with busy men, who, in the intervals of their labour, drank coconuts or eagerly devoured bananas, prickly pears, guavas, soursops, grapes, mangoes, and the various other fruits with which the island abounded.— Two Gallant Sons of Devon A Tale of the Days of Queen Bess
And the greensward, and the shadows, and the sunlight, and the atmosphere, and the mistiness--isn't it like pearl-dust and gold-dust floating in the air?— The Wit and Humor of America, Volume X (of X)

Century Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word several times a year.