Simple Definition of leaf
: one of the flat and typically green parts of a plant that grow from a stem or twig
: a sheet of paper in a book
: a part that can be added to or removed from a table to change the size of its top surface
Full Definition of leaf
1 a (1) : a lateral outgrowth from a plant stem that is typically a flattened expanded variably shaped greenish organ, constitutes a unit of the foliage, and functions primarily in food manufacture by photosynthesis (2) : a modified leaf (as a bract or sepal) primarily engaged in functions other than food manufacture b (1) : foliage <trees in full leaf> (2) : the leaves of a plant as an article of commerce
2 : something suggestive of a leaf: as a : a part of a book or folded sheet containing a page on each side b (1) : a part (as of window shutters, folding doors, or gates) that slides or is hinged (2) : the movable parts of a table top c (1) : a thin sheet or plate of any substance : lamina (2) : metal (as gold or silver) in sheets usually thinner than foil (3) : one of the plates of a leaf spring
Examples of leaf
I heard the rustle of the autumn leaves.
a pile of dead leaves
The trees drop their leaves in the fall, and new leaves grow again in the spring.
The trees have not yet come into leaf.
Origin of leaf
Middle English leef, from Old English lēaf; akin to Old High German loub leaf
First Known Use: before 12th century
Definition of leaf
1 : to shoot out or produce leaves <will leaf out in spring>
2 : to turn over pages especially to browse or skim <leaf through a book>
: to turn over the pages of
Examples of leaf
<we must have spent hours leafing through wallpaper books before we found something we both liked>
First Known Use of leaf
Medical Definition of leaf
: a thin layer or sheet of tissue <the anterior leaf of the coronary ligament>
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Seen and Heard
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