limestone [limestones]◼◼◼(abundant rock of marine and fresh-water sediments) noun [UK: ˈlaɪm.stəʊn] [US: ˈlaɪmˌstoʊn]The piping is clogged up because of the limestone. = La tuyauterie est bouchée à cause du calcaire.
calcaireadjectif
calcareous◼◼◻(resembling or containing limestone) adjective [UK: kælˈk.eə.rɪəs] [US: kælˈk.e.riːəs]