Merriam-Webster's Collegiate® Dictionary, 11th Edition
LAWN
I. noun see: land
Date: 14th century
an open space between woods ; glade , ground (as around a house or in a garden or park) that is covered with grass and is kept mowed, a relatively even layer of bacteria covering the surface of a culture medium, lawn or lawny adjective
II. noun
Etymology: Middle English lawne, laund, probably from Laon, France
Date: 15th century
a fine sheer linen or cotton fabric of plain weave that is thinner than cambric, lawny adjective