orange-tip
US /ˈɔːrɪndʒ tɪp/
UK /ˈɔːrɪndʒ tɪp/

1.
a white butterfly, the male of which has orange tips to the forewings.
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The children were delighted to spot an orange-tip butterfly fluttering in the garden.
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The male orange-tip is easily identified by the bright orange patches on its forewings.