Definition of Slate

Slate

1. An argillaceous rock which readily splits into thin plates; argillite; argillaceous schist.
2. Any rock or stone having a slaty structure.
3. A prepared piece of such stone.
4. A thin, flat piece, for roofing or covering houses, etc.
5. A tablet for writing upon.
6. An artificial material, resembling slate, and used for the above purposes.
7. A thin plate of any material; a flake.
8. A list of candidates, prepared for nomination or for election; a list of candidates, or a programme of action, devised beforehand.
9. To cover with slate, or with a substance resembling slate; as, to slate a roof; to slate a globe.
10. To register (as on a slate and subject to revision), for an appointment.
11. To set a dog upon; to bait; to slat. See 2d Slat, 3.