(~s)
1.
The ~ of a knife, axe, or saw is the edge, which is used for cutting.
Many of these tools have sharp ~s, so be careful.
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2.
The ~s of a propeller are the long, flat parts that turn round.
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3.
The ~ of an oar is the thin flat part that you put into the water.
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4.
A ~ of grass is a single piece of grass.
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5.
rotor ~: see rotor
see also razor ~ , shoulder ~