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or (EN)
conjunction, adjective

conjunction “or”

or
  1. joins alternatives to show a choice between them
    Would you like tea or coffee with your breakfast?
  2. indicates a consequence if the first part is not followed
    Wear a helmet when you ride your bike, or you might get seriously injured.
  3. links two names referring to the same thing
    The artist Prince, or the Artist Formerly Known as Prince, was known for his eclectic style.
  4. introduces a clarifying or synonymous term
    Ornitology, or the study of birds, is a subfield of biology.
  5. suggests a negative outcome if the advice is not heeded
    Finish your homework now, or you won't be allowed to watch TV later.

adjective “or”

base form or, non-gradable
  1. describes gold or yellow color in heraldic shields
    The knight's shield bore a lion rampant or, symbolizing his courage and nobility.