low-level (all senses) / mediocre, pedestrian (everyday, unexceptional)

ground / (colloquial, atechnical synonym of suolo (“terreno”, “soil”)) soil; soil

(colloquial, astronomy, by extension of Terra) planet

(astronomy) Earth / (astrology) the astrological element Earth that comprises the three earth signs (Toro, Vergine and Capricorno)

(military) surface-to-air, ground-to-air

(military) air-to-ground, air-to-surface

(military) surface-to-surface, ship-to-shore

Alternative spelling of terraferma

Holy Land

Used other than figuratively or idiomatically: see a, terra. / completely deflated (of a tire) / disheartened due to being ill, morally depressed, or financially ruined; down in the dumps / earthed (of electrical equipment)