What is the meaning of recognise?

verb

• Show approval or appreciation of.
  • usage: "My work is not recognized by anybody"; "The best student was recognized by the Dean"
  • synonyms: recognize
• Grant credentials to.
  • usage: "The Regents officially recognized the new educational institution"; "recognize an academic degree"
  • synonyms: accredit, recognize
• Detect with the senses.
  • usage: "The fleeing convicts were picked out of the darkness by the watchful prison guards"; "I can't make out the faces in this photograph"
  • synonyms: spot, recognize, distinguish, discern, pick out, make out, tell apart
• Express greetings upon meeting someone.
  • synonyms: greet, recognize
• Express obligation, thanks, or gratitude for.
  • usage: "We must acknowledge the kindness she showed towards us"
  • synonyms: acknowledge, recognize
• Be fully aware or cognizant of.
  • synonyms: recognize, realize, realise, agnize, agnise
• Perceive to be the same.
  • synonyms: recognize
• Accept (someone) to be what is claimed or accept his power and authority.
  • usage: "The Crown Prince was acknowledged as the true heir to the throne"; "We do not recognize your gods"
  • synonyms: acknowledge, recognize, know