Meaning of the word "relative clause" in English

What does "relative clause" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

relative clause

US /ˈrel.ə.tɪv ˌklɔːz/
UK /ˈrel.ə.tɪv ˌklɔːz/
"relative clause" picture

Noun

1.

a clause that modifies a noun or pronoun, often introduced by a relative pronoun (such as 'who', 'which', 'that', or 'whose') or a relative adverb (such as 'where', 'when', 'why')

Example:
The man who lives next door is a doctor.
This is the book that I read last week.
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