(mining) A bed of clay that underlies a coal seam.

(now dialect, rare) Synonym of fuller's earth.

(seismology) A discontinuous earthquake-like event that releases energy over a period of hours to months, rather than the seconds to minutes characteristic of a typical earthquake.

(space travel) A manoeuvre in which a spacecraft leaves the orbit of a moon or other planet and travels to orbit around the Earth.

A yellow ochre sometimes used as a pigment.

At the moment midnight is reached in the time zone immediately east of the International Date Line (that is, on the Western Hemisphere).

Alternative form of counter-earth

An artificial pond that does not have a lining

(paganism, archaeology) Alternative form of Earth Mother

plural of earth mother