blue (EN)
adjective, noun, verb

adjective “blue”

blue, bluer, bluest
  1. colored with the hue of the clear sky or the deep sea
    The artist painted a blue sky with fluffy white clouds.
  2. feeling sad or depressed
    After the breakup, he was feeling really blue and didn't want to go out.
  3. in US politics: Associated with the Democratic Party
    The state has traditionally voted for Democrats, making it a blue state.
  4. informal: containing material that is sexually explicit or offensive
    The comedian's jokes were so blue that half the audience walked out.

noun “blue”

sg. blue, pl. blues or uncountable
  1. the color that resembles that of the clear sky or the deep sea
    The painter chose various shades of blue for the seascape.
  2. an object or person identified by the color blue
    In the game, you must collect all the blues to win.
  3. an award given for excellence in sports by an educational institution
    After years of dedication to the swim team, she finally earned her blue.
  4. the expanse above the earth where the sky is seen
    Birds disappeared into the blue.
  5. a large body of saltwater, especially the sea
    The ship set sail, disappearing into the vast blue.
  6. a method used to prevent metal from rusting
    Before assembling the machinery, the workers applied blue to all the steel parts to prevent corrosion.
  7. a product used to make white fabrics appear cleaner and brighter
    She used a blue in the wash to make her whites look whiter.

verb “blue”

blue; he blues; past blued, part. blued; ger. bluing, blueing
  1. to cause something to take on a blue color, or to become blue in color
    As the cold evening set in, the frost started blueing the tips of the grass.
  2. to treat steel with a process that makes it more resistant to rust
    The blacksmith blued the steel to finish the custom knife.
  3. to use a substance to make laundry appear whiter
    She blued her grandmother's lace tablecloth to restore its original brightness.