What does "restrictive clause" mean?

A dependent clause that provides essential information to identify or specify the noun it modifies, limiting its reference to a particular subset.

Restrictive clause

Common synonyms include: defining relative clause, essential clause, german restriktion, qualifying term clause, restrictive relative clause.

noun

noun ·Rare ·Advanced level

Noun

1
A dependent clause that provides essential information to identify or specify the noun it modifies, limiting its reference to a particular subset.
2
a subordinate clause that limits or restricts the meaning of the noun phrase it modifies wordnet