copperhead
US /ˈkɑː.pɚ.hed/
UK /ˈkɑː.pɚ.hed/

1.
a venomous pit viper (Agkistrodon contortrix) of eastern North America, typically reddish-brown with darker hourglass-shaped bands
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Be careful when hiking in the woods; there might be a copperhead.
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The distinctive markings of the copperhead make it easily identifiable.