What is the meaning of possible?

noun

• Something that can be done.
  • usage: "politics is the art of the possible"
• An applicant who might be suitable.

adjective

• Capable of happening or existing.
  • usage: "a breakthrough may be possible next year"; "anything is possible"; "warned of possible consequences"
• Existing in possibility.
  • usage: "a potential problem"; "possible uses of nuclear power"
  • synonyms: potential