A license is defined as a privilege or authority given to one or retained by one to do some act or acts on the land of another, but which does not amount to an interest in the land itself. City of Austin v. Puett, 344 S.W.2d 717, 720 (Tex. Civ.App.-Austin 1961, writ ref'd n.r.e.). The general rule is that gratuitous licenses are revocable at will.
Since the license was no supported by consideration it is revocable at the will of the grantor. Drye v. Eagle Rock Ranch, Inc., 364 S.W.2d 196 (Tex.Sup. 1963); Thomas v. Junction City Irrigation Co., 80 Tex. 550, 16 S.W. 324 (1891); City of Austin v. Puett, 344 S.W.2d 717 (Tex.Civ.App., Austin 1961, writ ref'd n.r.e.). Following the revocation of license Mrs. Arant became a trespasser by virtue of her refusal to stop the sale when ordered to do so. Loftus v. Maxey, 73 Tex. 242, 11 S.W. 272 (1889).