Definition of "restrictive"

restrictive

/ɹɪˈstɹɪktɪv/

adjective
comparative more restrictive, superlative most restrictive
1. Confining, limiting, containing within defined bounds.
  Quotations
  The help tended to be officious, the rules, if heeded, restrictive, and the management meddlesome.
  1961 November 10, Joseph Heller, “The Soldier in White”, in Catch-22 […], New York, N.Y.: Simon and Schuster, page 168
  The pinnacle of the effort to fix restrictive meanings to a set of terminology can be found in two papers in American Speech by Feinsilver (1979, 1980).
  2018, James Lambert, “A multitude of ‘lishes’: The nomenclature of hybridity”, in English World-Wide‎, page 7
2. (Of clothing) limiting free and easy bodily movement.
noun
plural restrictives
1. (grammar) A clause that narrows the meaning of a noun or noun phrase.
  Quotations
  […] a couple of further differences between restrictive and non-restrictive relative clauses: (1) in contrast with restrictives, the wh-phrase in non-restrictives cannot be ellipted; […]
  2013, Noel Burton-Roberts, Analysing Sentences, page 210