definition of
ground

[1] #1 ground n. [land, dry land, earth, solid ground, terra firma] the solid part of the earth's surface; "the plane turned away from the sea and moved back over land"; "the earth shook for several minutes"; "he dropped the logs on the ground". wn

[2] #2 ground n. [reason] a rational motive for a belief or action; "the reason that war was declared"; "the grounds for their declaration". wn

[3] #3 ground n. [earth] the loose soft material that makes up a large part of the land surface; "they dug into the earth outside the church". wn

[4] #4 ground v. [anchor] fix firmly and stably; "anchor the lamppost in concrete". wn

[5] #5 ground v. confine or restrict to the ground; "After the accident, they grounded the plane and the pilot". wn