Dictionary.net

any of numerous plants having stinging hairs that cause skin irritation on contact (especially of the genus Urtica or family Urticaceae)

sting with or as with nettles and cause a stinging pain or sensation

any of numerous plants having stinging hairs that cause skin irritation on contact (especially of the genus Urtica or family Urticaceae)

A plant of the genus Urtica, covered with minute sharp hairs containing a poison that produces a stinging sensation. Urtica gracitis is common in the Northern, and U. chamaedryoides in the Southern, United States. the common European species, U. urens and U. dioica, are also found in the Eastern united States. U. pilulifera is the Roman nettle of England.

To fret or sting; to irritate or vex; to cause to experience sensations of displeasure or uneasiness not amounting to violent anger.

A plant of the genus Urtica, covered with minute sharp hairs containing a poison that produces a stinging sensation. Urtica gracitis is common in the Northern, and U. chamaedryoides in the Southern, United States. the common European species, U. urens and U. dioica, are also found in the Eastern united States. U. pilulifera is the Roman nettle of England.

To fret or sting; to irritate or vex; to cause to experience sensations of displeasure or uneasiness not amounting to violent anger.

Any of various plants having prickles or stinging hairs.

To provoke or irritate.

Urinary stimulant; astringent.

A common plant covered with hairs, which sting sharply.

To fret, as a nettle does the skin: to irritate.

A plant covered with stinging hairs.

n. [Anglo-Saxon] A plant covered with minute sharp hairs containing a poison that produces a very painful sensation.