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blue thistle

blue thistle

1 7.4
A prickly plant with spiky blue flowers often growing by roads and fields
  • noun
  • UK
: cardo azul
  • Gardeners sometimes remove blue thistle because its sharp leaves can make it unwanted in lawns.

Examples

  • The fields were dotted with blue thistle, adding a splash of color among the green grass.

  • I spotted a beautiful blue thistle growing by the roadside during our hike.

  • The blue thistle is often found in gardens.

  • Many people consider the blue thistle a beautiful plant.

  • I spotted a beautiful blue thistle growing by the roadside during our hike.

  • The fields were dotted with blue thistle, adding a splash of color among the green grass.

  • Gardeners sometimes remove blue thistle because its sharp leaves can make it unwanted in lawns.

Synonyms

globe thistle
vsblue thistle
1 9.1

A plant with prickly leaves and round blue flower heads

is about plants with spiky flowers rather than dense spherical flower heads
blueweed
vsblue thistle
1 9.9

A rough prickly plant that has spikes of bright blue flowers

is usually described by prickly spines rather than by rough hairs
viper's bugloss
vsblue thistle
1 9.9

A rough, prickly plant from Europe with bright blue flower spikes

is a broader common label for similar prickly plants not only that species
blue devil
vsblue thistle
9.9

A prickly plant with tall spikes of blue flowers that grows in fields

is often considered a prickly plant rather than an outright weed
Echium vulgare
vsblue thistle
  • Specialized
9.9

A rough, prickly European plant with tall spikes of blue flowers

is the common general name rather than the scientific species label

Surface Forms

blue thistle singular
blue thistles plural

Morphology

blue + thistle

The phrase is a straightforward adjective + noun combination: 'blue' describes the color of a 'thistle', so a learner who knows both words can infer it is a thistle with blue flowers. This compositional pattern is common across languages and follows standard English noun modification, making the meaning immediately derivable for a B1 learner.

Etymology

Blue thistle is a name for a prickly plant with bright blue flowers. The word thistle points to its sharp, spiky leaves and the word blue shows the flower color, so the name gives a clear picture of a plant often called a 'weed'.