ostrich
US /ˈɑː.strɪtʃ/
UK /ˈɑː.strɪtʃ/
1.
a large, flightless, fast-running bird of Africa, with a long neck and long legs.
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The ostrich is the largest living bird.
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An ostrich can run up to 70 km/h.
2.
a person who refuses to acknowledge or face a problem or danger.
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Don't be an ostrich and ignore the rising debt.
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He's an ostrich when it comes to his health problems.