noun

• (uncountable) Darkness where light, particularly sunlight, is blocked.
  "The old oak tree gave shade in the heat of the day."
• (countable) Something that blocks light, particularly in a window.
  "Close the shade, please: it's too bright in here."
• (countable) A variety of a color, in particular one obtained by adding black (compare tint).
  "I've painted my room in five lovely shades of pink and chartreuse."
• (figuratively) A subtle variation in a concept.
  "shades of meaning"

verb

• (transitive) To shield (someone or something) from light.
  "The old oak tree shaded the lawn in the heat of the day."
• (intransitive, rare) To shield oneself from light.
  "We shaded under a huge oak tree."
• (transitive) To alter slightly.
  "You'll need to shade your shot slightly to the left."
• (intransitive) To vary or approach something slightly, particularly in color.
  "The hillside was bright green, shading towards gold in the drier areas."