#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 ground n. [reason] a rational motive for a belief or action; "the reason that war was declared"; "the grounds for their declaration". wn
#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 ground v. [anchor] fix firmly and stably; "anchor the lamppost in concrete". wn
#5 ground v. confine or restrict to the ground; "After the accident, they grounded the plane and the pilot". wn
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