/sleɪt/
noun
A fine-grained homogeneous sedimentary rock composed of clay or volcanic ash which has been metamorphosed so that it cleaves easily into thin layers.The bluish-grey colour of most slate.A chalkboard, sheet of slate for writing on with chalk or with a thin rod of slate (a slate pencil) formerly commonly used by both students and teachers in schoolsA roofing-tile made of slate.A record of money owed.A list of affiliated candidates for an election.An artificial material resembling slate and used for the same purposes.A thin plate of any material; a flake.adjective
Having the bluish-grey/gray colour of slate.