slate (Noun) — A fine-grained metamorphic rock that can be split into thin layers.
slate (Noun) — (formerly) a writing tablet made of slate.
slate (Noun) — Thin layers of rock used for roofing.
slate (Noun) — A list of candidates nominated by a political party to run for election to public offices.
slate (Noun) — A bluish-grey colour.
slate (Verb) — Designate or schedule.
slate (Verb) — Enter on a list or slate for an election.
slate (Verb) — Cover with slate. ex. "slate the roof"
slate (Verb) — Strongly criticize.