Noun terra firma has 1 sense
  1. land, dry land, earth, ground, 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"
    --1 is a kind of object, physical object
    --1 is a part of Earth, world, globe
    --1 has particulars:
     America, the Americas; archipelago; beachfront; cape, ness; coastal plain; floor; foreland; forest, woodland, timberland, timber; hills; island; isthmus; landmass; mainland; neck; oxbow; peninsula; plain, field, champaign; slash; wonderland
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