A type of nodule or concretion found in soil, possibly a hardened lump of earth or clay.
Compound of 'earth' and 'gall' (a swelling or growth). An archaic or regional term, with 'gall' referring to an abnormal excrescence on earth or rock.
Geodes and concretions are nature's surprise packages—ordinary-looking 'earthgalls' crack open to reveal sparkling crystals inside, reminding us that beauty and structure hide within seemingly bland earth.
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