steel
US /stiːl/
UK /stiːl/
1.
a hard, strong, gray or bluish-gray alloy of iron with carbon and usually other elements, used as a structural and fabricating material.
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The bridge was constructed with high-strength steel.
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Many modern buildings use steel frames.
1.
harden (oneself) against something unpleasant or difficult.
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She had to steel herself for the difficult conversation.
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He steeled his nerves before stepping onto the stage.