Defn: A floor or pavement supposed to rest upon the earth.
2. Any definite portion of the earth's surface; region; territory; country. Hence: A territory appropriated to, or resorted to, for a particular purpose; the field or place of action; as, a hunting or fishing ground; a play ground. From . . . old Euphrates, to the brook that parts Egypt from Syrian ground. Milton.
3. Land; estate; possession; field; esp. (pl.), the gardens, lawns, fields, etc., belonging to a homestead; as, the grounds of the estate are well kept. Thy next design is on thy neighbor's grounds. Dryden. 4.
4. The basis on which anything rests; foundation. Hence: The foundation of knowledge, belief, or conviction; a premise, reason, or datum; ultimate or first principle; cause of existence or occurrence; originating force or agency; as, the ground of my hope.
5. (Paint. & Decorative Art) (a) That surface upon which the figures of a composition are set, and which relieves them by its plainness, being either of one tint or of tints but slightly contrasted with one another; as, crimson Bowers on a white ground. See Background, Foreground, and Middle-ground. (b) In sculpture, a flat surface upon which figures are raised in relief. (c) In point lace, the net of small meshes upon which the embroidered pattern is applied; as, Brussels ground. See Brussels lace, under Brussels.
6. (Etching)
Defn: A gummy composition spread over the surface of a metal to be etched, to prevent the acid from eating except where an opening is made by the needle.
7. (Arch.)
Defn: One of the pieces of wood, flush with the plastering, to which moldings, etc., are attached; — usually in the plural.
Note: Grounds are usually put up first and the plastering floated flush with them.