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blue gum

blue gum

7.2
A tall fast-growing eucalyptus tree with bluish young leaves used for timber and medicine
  • noun
  • /bluː ɡʌm/
  • UK
translation icon : eucalipto azul
  • Many farmers prefer planting blue gum for its fast growth and quality timber.
  • blue gum tree
  • blue gum eucalyptus

Examples

  • The blue gum eucalyptus has distinct bluish leaves and is known for its medicinal oil.

  • The courtyard with the rooms surrounding it contained the heat like an oven, a meager patch of shade huddling beside the trunk of the blue gum tree.

    Fiction book (1996)
  • He was constantly haunted by the atrocities that he had witnessed through the years, and finally, on July 27, 1994, Carter backed his red Nissan truck against a blue gum tree, attached a garden hose to the exhaust pipe, and rolled up the window to his car.

    Blog text (16)
  • The blue gum tree grows tall and provides shelter for various animals.

Synonyms

gum
vsblue gum
13 6.8

A tree, like eucalyptus, that makes sticky sap used in products

is a single species with bluish young leaves and useful oil
Eucalyptus
vsblue gum
  • Specialized
11 5.9

A tall Australian tree with leaves used to make oil and wood

is the narrower, single species with bluish leaves and useful oil
gum tree
vsblue gum
  • UK
1 3.7

A tree that makes a sticky, sweet-smelling sap like eucalyptus

is the specific tall species grown for timber and shelter with medicinal oil
Eucalyptus globulus
vsblue gum
  • Australian
7.0

A tall Australian tree with bluish young leaves and oil used in medicine

is the common name used for timber and shelter rather than the scientific label

Surface Forms

blue gum singular
blue gums plural

Morphology

blue + gum

The meaning is directly built from the adjective 'blue' (a color) modifying 'gum' (a gum/eucalyptus tree), so it denotes a gum tree with bluish leaves. Color + noun species names are a transparent, cross-linguistic compositional pattern, so a B1 learner who knows both constituents should be able to infer the MWE's meaning.

Etymology

Blue gum comes from a simple picture: the young leaves often look blue, so blue names the colour, and gum was a common name for eucalyptus trees because they give a sticky 'sap'. So blue gum now refers to the tall eucalyptus with bluish young leaves used for wood and oil.