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English definition of “thick”

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thick

adjective
 
/θɪk/
B1 Something that is thick is larger than usual between its opposite sides: a thick layer of snow →  Opposite thin
used to say how long the distance is from one side of something to the other: a piece of wood 6 inches thick
B1 growing very close together and in large amounts: thick, dark hair
Thick smoke, cloud, or fog is difficult to see through: Thick, black smoke was pouring out of the chimney.
UK informal not intelligent
(Definition of thick from the Cambridge Essential Dictionary © Cambridge University Press)
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