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leaf definition

leaf (lēf)

noun pl. leaves

  1. any of the flat, thin, expanded organs, usually green, growing laterally from the stem or twig of a plant: it usually consists of a broad blade, a petiole, or stalk, and stipules and is involved in the processes of photosynthesis and transpiration
  2. in popular usage
    1. the blade of a leaf
    2. a petal
  3. leaves collectively choice tobacco leaf
  4. a design resembling a leaf, used as an ornament in architecture
  5. a sheet of paper, esp. as part of a book, with a page on each side
    1. a very thin sheet of metal; lamina
    2. such sheets collectively covered with gold leaf
    1. a hinged section of a table top, forming an extension when raised into place
    2. a board inserted into a table top to increase its surface
  6. a flat, hinged or movable part of a folding door, shutter, etc.
  7. ☆ one of a number of metal strips laid one upon another to make a leaf spring

Etymology: ME lefe < OE leaf, akin to Du loof, Ger laub < IE base *leubh-, to peel off, pull off > Lith lupù, to skin, pare off

intransitive verb

  1. to put forth or bear leaves: often with out
  2. to turn the pages of a book, etc., esp. so as to glance quickly (through)

transitive verb

turn the pages of

Related Forms:

leaf Idioms

in leaf

having leaves grown; with foliage

take a leaf from someone's book

to follow someone's example

turn over a new leaf

to make a new start

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