UNDERCLAY

Etymology

Noun

underclay (plural underclays)

(geology) A stratum of clay lying beneath a coal bed.

Source: Wiktionary


Un"der*clay`, n. (Geol.)

Definition: A stratum of clay lying beneath a coal bed, often containing the roots of coal plants, especially the Stigmaria.

Source: Webster’s Unabridged Dictionary 1913 Edition



RESET




Word of the Day

2 July 2025

RESTITUTION

(noun) getting something back again; “upon the restitution of the book to its rightful owner the child was given a tongue lashing”


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Coffee Trivia

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