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leaf - definition and synonyms


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noun leaf pronunciation in American English /lif/
Word Forms
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  1. 1
    [countable] a flat thin green part of a tree or plant that grows on a branch or stem
    A light breeze stirred the leaves of the tall oak tree outside her window.
    falling/autumn leaves
    come into leaf (=start to produce leaves in spring): The maple trees were just coming into leaf.
    be in leaf (=have produced leaves in spring): The trees were already in leaf.
  2. 2
    [countable] a sheet of paper, especially in a book
    leaf of: a leaf of paper
    one of the leaves of a book



a course of study which is much shorter than a university course and focuses on the skills you need for a job, especially computer-related skills

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an ancient Roman system of underfloor heating, used to heat houses with hot air; from the Latin 'hypocaustum'

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