|1.||any weedy plant of the temperate urticaceous genus Urtica, such as U. dioica (stinging nettle), having serrated leaves with stinging hairs and greenish flowers|
|2.||any of various other urticaceous plants with stinging hairs or spines|
|3.||any of various plants that resemble urticaceous nettles, such as the dead-nettle, hemp nettle, and horse nettle|
|4.||grasp the nettle to attempt or approach something with boldness and courage|
|5.||to bother; irritate|
|6.||to sting as a nettle does|
|[Old English netele; related to Old High German nazza (German Nessel)]|
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