What does RECOGNISE mean?

verb

1. show approval or appreciation of“My work is not recognized by anybody!”
2. grant credentials to“The Regents officially recognized the new educational institution”
3. detect with the senses“The fleeing convicts were picked out of the darkness by the watchful prison guards”
4. express greetings upon meeting someone
5. express obligation, thanks, or gratitude for“We must acknowledge the kindness she showed towards us”
6. be fully aware or cognizant of
7. perceive to be the same
8. accept (someone) to be what is claimed or accept his power and authority“The Crown Prince was acknowledged as the true heir to the throne”