Word.ws English Dictionary

underclay

underclay noun: a stratum of clay lying beneath a coal bed.

Noun

underclay (plural underclays)

  1. A stratum of clay lying beneath a coal bed.

Forms of underclay

pluralunderclays

Origin of underclay

From under- + clay.

Questions about underclay

What does underclay mean?
Underclay means a stratum of clay lying beneath a coal bed.
What part of speech is underclay?
Underclay is a noun.
What is the plural of underclay?
The plural of underclay is underclays.

Words near underclay in the dictionary

  1. underclasspeople
  2. underclassperson
  3. underclasspersons
  4. underclasswoman
  5. underclasswomen
  6. underclay
  7. underclays
  8. underclerk
  9. underclerks
  10. underclerkship
  11. underclerkships

Source and license

Adapted from Wiktionary: underclay (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Flame, not lame-underclay.wav.

Cite this entry: “underclay.” Word.ws, https://word.ws/underclay. Based on Wiktionary, CC BY-SA 4.0.