The definition of a leaf is a part of a plant or tree attached to the stem or branches.
An example of a leaf is the part of the tree that is green in the summer and may change colors and fall off of the tree before the start of winter.
See leaf in Webster's New World College Dictionary
noun pl. leaves
Origin: ME lefe < OE leaf, akin to Du loof, Ger laub < IE base *leubh-, to peel off, pull off > Lith lupù, to skin, pare off
See leaf in American Heritage Dictionary 4
noun pl. leaves leaves (lēvz)
Origin: Middle English
Origin: , from Old English lēaf.
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