Properly, the leaf, or flat part of the leaf, of any plant, especially of gramineous plants. The term is sometimes applied to the spire of grasses.
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The cutting part of an instrument; as, the blade of a knife or a sword.
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The broad part of an oar; also, one of the projecting arms of a screw propeller.
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The scapula or shoulder blade.
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The principal rafters of a roof.
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The four large shell plates on the sides, and the five large ones of the middle, of the carapace of the sea turtle, which yield the best tortoise shell.
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A sharp-witted, dashing, wild, or reckless, fellow; -- a word of somewhat indefinite meaning.