Noun
Examples
subordinate clause (plural subordinate clauses)
(grammar) A clause that cannot stand alone as a sentence, but functions as either a noun, adjective or adverb in a sentence.
The average politician goes through a sentence like a man exploring a disused mine shaft-blind, groping, timorous and in imminent danger of cracking his shins on a subordinate clause or a nasty bit of subjunctive. Robertson Davies