1) Dry land 2) Dry land or solid ground 3) Ground 4) Land 5) Solid ground 6) The ground beneath us 
Terra firma is a Latin phrase meaning `solid earth` ({ety||terra|earth||firma|solid}). The phrase refers to the dry land mass on the earth`s surface and is used to differentiate from the sea or air. Terra Firma may also refer to: ...
Terra firma is Latin for Solid earth
terra firma 1. Solid ground, dry land; in contrast to water or air. 2. About 1605, 'part of the Italian mainland ruled by Venice', from Modern Latin terra firma; literally, 'firm land', from Latin terra 'earth, land'.
solid earth, dry land (as different to the sea or waters or air) - typically referring to being safely or surely on land, for example 'back on terra firma' (after a plane or sea journey, or parachute leap)
(Latin) dry land.
the solid part of the earth's surface the solid part of the earth's surface