leaf Definition in the Cambridge English Dictionary
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Definition of “leaf” - English Dictionary

Definition of "leaf" - American English Dictionary

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leafnoun [C]

 us   /lif/ (plural leaves  /livz/ )

leaf noun [C] (PLANT)

any of the ​flat, usually ​greenparts of a ​plant that are ​joined at one end to the ​stem or ​branch: By early ​November it’s getting ​cold and the ​trees are ​starting to ​losetheir leaves.

leaf noun [C] (PAPER)

a ​thinflatsubstance, esp. a ​sheet of ​paper, or a ​layer of something: Some of the leaves of the ​oldbook had come ​loose. A leaf of a ​table is an ​extraflatpiece that can be ​added to the ​topsurface to make the ​tablelarger.
(Definition of leaf from the Cambridge Academic Content Dictionary © Cambridge University Press)

Definition of "leaf" - British English Dictionary

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leafnoun [C]

uk   us   /liːf/ (plural leaves)

leaf noun [C] (PLANT)

B1 one of the ​flat, usually ​greenparts of a ​plant that are ​joined at one end to the ​stem or ​branch: a ​palm leaf autumn leaves He was ​raking up leaves in his ​garden.be in leaf/come into leaf When a ​plant is in leaf or when it comes into leaf, it has or gets leaves on it: The ​trees are in leaf early this ​year. The ​bushes are just coming into leaf.
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leaf noun [C] (PAPER)

a ​thinsheet of ​paper

leaf noun [C] (TABLE)

an ​extrapart of a ​table that can be ​folded away when not being used
(Definition of leaf from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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