- 1[uncountable] a type of dark gray stone that splits easily into thin flat layers a slate quarry The sea was the color of slate.
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- 2[countable] a small thin piece of slate, used for covering roofs A loose slate had fallen from the roof.
- 3[countable] a list of the candidates in an election a slate of candidates the Democratic slate
- 4[countable] a small sheet of slate in a wooden frame, used in the past in schools for children to write on Idioms
a record of your work or behavior that does not show any mistakes or bad things that you have done No government operates with a completely clean slate.
to agree to forget about past mistakes or arguments and start again with a relationship
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