What is the meaning of Nettle?

Any plant whose foliage is covered with stinging, mildly poisonous hairs, causing an instant rash.

1. Especially, most species of herb genus Urtica, stinging nettles:
   1. Most, but not all, subspecies of Urtica dioica (common nettle),
   2. Urtica incisa (Australian nettle);
2. Wood nettle (Laportea canadensis);
3. Bull nettles and spurge nettles (Cnidoscolus spp.):
   1. bull nettle, spurge nettle (Cnidoscolus stimulosus)
   2. Texas bull nettle (Cnidoscolus texanus),
   3. bull nettle (Cnidoscolus urens),
4. Nettle trees or tree nettles:
   1. Various species of the genus Dendrocnide:
      1. small-leaved nettle (Dendrocnide photinophylla).
   2. scratchbush (Urera baccifera)
   3. tree nettle (Urtica ferox);
5. rock nettle (Eucnide spp.);

Especially, most species of herb genus Urtica, stinging nettles:

1. Most, but not all, subspecies of Urtica dioica (common nettle),
2. Urtica incisa (Australian nettle);

Most, but not all, subspecies of Urtica dioica (common nettle),

Urtica incisa (Australian nettle);

Wood nettle (Laportea canadensis);

Bull nettles and spurge nettles (Cnidoscolus spp.):

1. bull nettle, spurge nettle (Cnidoscolus stimulosus)
2. Texas bull nettle (Cnidoscolus texanus),
3. bull nettle (Cnidoscolus urens),

bull nettle, spurge nettle (Cnidoscolus stimulosus)

Texas bull nettle (Cnidoscolus texanus),

bull nettle (Cnidoscolus urens),

Nettle trees or tree nettles:

1. Various species of the genus Dendrocnide:
   1. small-leaved nettle (Dendrocnide photinophylla).
2. scratchbush (Urera baccifera)
3. tree nettle (Urtica ferox);

Various species of the genus Dendrocnide:

1. small-leaved nettle (Dendrocnide photinophylla).

small-leaved nettle (Dendrocnide photinophylla).

scratchbush (Urera baccifera)

tree nettle (Urtica ferox);

rock nettle (Eucnide spp.);

Certain plants that have spines or prickles:

1. ball nettle (Solanum carolinense);
2. bull nettle, silver-leaf nettle, white horse-nettle (Solanum elaeagnifolium);
3. western horse-nettle, robust horse-nettle (Solanum dimidiatum);
4. horse-nettle (Solanum rostratum);
5. hackberry (Celtis spp.).

ball nettle (Solanum carolinense);

bull nettle, silver-leaf nettle, white horse-nettle (Solanum elaeagnifolium);

western horse-nettle, robust horse-nettle (Solanum dimidiatum);

horse-nettle (Solanum rostratum);

hackberry (Celtis spp.).

Certain non-stinging plants, mostly in the family Lamiaceae, that resemble the species of Urtica:

1. dead nettle, dumb nettle (Lamium spp.), particularly Lamium album, white nettle;
2. false nettle (Boehmeria spp., family Urticaceae);
3. flame nettle or painted nettle (Coleus spp.);
4. hedge nettle (Stachys spp.);
5. hemp nettle (Galeopsis spp.);
6. horse nettle Agastache urticifolia,
7. nilgiri nettle, Himalayan giant nettle (Girardinia diversifolia, family Urticaceae).

dead nettle, dumb nettle (Lamium spp.), particularly Lamium album, white nettle;

false nettle (Boehmeria spp., family Urticaceae);

flame nettle or painted nettle (Coleus spp.);

hedge nettle (Stachys spp.);

hemp nettle (Galeopsis spp.);

horse nettle Agastache urticifolia,

nilgiri nettle, Himalayan giant nettle (Girardinia diversifolia, family Urticaceae).

Loosely, anything which causes a similarly stinging rash, such as a jellyfish or sea nettle.

Of the nettle plant and similar physical causes, to sting, causing a rash in someone.

To pique, irritate, vex or provoke.

Source: wiktionary.org