What is the meaning of quickest?

adjective

• Accomplished rapidly and without delay.
  • usage: "was quick to make friends"; "his quick reaction prevented an accident"; "hoped for a speedy resolution of the problem"; "a speedy recovery"; "he has a right to a speedy trial"
  • synonyms: quick, speedy
• Hurried and brief.
  • usage: "paid a flying visit"; "took a flying glance at the book"; "a quick inspection"; "a fast visit"
  • synonyms: flying, quick, fast
• Moving quickly and lightly.
  • usage: "sleek and agile as a gymnast"; "as nimble as a deer"; "nimble fingers"; "quick of foot"; "the old dog was so spry it was halfway up the stairs before we could stop it"
  • synonyms: agile, nimble, quick, spry
• Apprehending and responding with speed and sensitivity.
  • usage: "a quick mind"; "a ready wit"
  • synonyms: quick, ready
• Performed with little or no delay.
  • usage: "an immediate reply to my letter"; "a prompt reply"; "was quick to respond"; "a straightaway denial"
  • synonyms: immediate, prompt, quick, straightaway
• Easily aroused or excited.
  • usage: "a quick temper"; "a warm temper"
  • synonyms: quick, warm

adverb

• With little or no delay.
  • usage: "the rescue squad arrived promptly"; "come here, quick"
  • synonyms: promptly, quickly, quick
• Most quickly.
  • synonyms: fastest