subterrain

== English == === Etymology === (This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.) === Noun === subterrain (countable and uncountable, plural subterrains) (geology) The bedrock or rock layer that lies beneath the soil and superficial features of an area. A cave or underground room. An underground region. An underlying basis or undercurrent. === Adjective === subterrain (comparative more subterrain, superlative most subterrain) Synonym of subterranean. === Anagrams === rurbanites