What is the meaning of open?

noun

• A clear or unobstructed space or expanse of land or water.
  • usage: "finally broke out of the forest into the open"
  • synonyms: clear
• Where the air is unconfined.
  • usage: "he wanted to get outdoors a little"; "the concert was held in the open air"; "camping in the open"
  • synonyms: outdoors, out-of-doors, open air
• A tournament in which both professionals and amateurs may play.
• Information that has become public.
  • usage: "all the reports were out in the open"; "the facts had been brought to the surface"
  • synonyms: surface

verb

• Cause to open or to become open.
  • usage: "Mary opened the car door"
  • synonyms: open up
• Start to operate or function or cause to start operating or functioning.
  • usage: "open a business"
  • synonyms: open up
• Become open.
  • usage: "The door opened"
  • synonyms: open up
• Begin or set in action, of meetings, speeches, recitals, etc..
  • usage: "He opened the meeting with a long speech"
• Spread out or open from a closed or folded state.
  • usage: "open the map"; "spread your arms"
  • synonyms: unfold, spread, spread out
• Make available.
  • usage: "This opens up new possibilities"
  • synonyms: open up
• Become available.
  • usage: "an opportunity opened up"
  • synonyms: open up
• Have an opening or passage or outlet.
  • usage: "The bedrooms open into the hall"
• Make the opening move.
  • usage: "Kasparov opened with a standard opening"
• Afford access to.
  • usage: "the door opens to the patio"; "The French doors give onto a terrace"
  • synonyms: afford, give
• Display the contents of a file or start an application as on a computer.

adjective

• Affording unobstructed entrance and exit; not shut or closed.
  • usage: "an open door"; "they left the door open"
  • synonyms: unfastened
• Affording free passage or access.
  • usage: "open drains"; "the road is open to traffic"; "open ranks"
• With no protection or shield.
  • usage: "the exposed northeast frontier"; "open to the weather"; "an open wound"
  • synonyms: exposed
• Open to or in view of all.
  • usage: "an open protest"; "an open letter to the editor"
• Used of mouth or eyes.
  • usage: "keep your eyes open"; "his mouth slightly opened"
  • synonyms: opened
• Not having been filled.
  • usage: "the job is still open"
• Accessible to all.
  • usage: "open season"; "an open economy"
• Not defended or capable of being defended.
  • usage: "an open city"; "open to attack"
  • synonyms: assailable, undefendable, undefended
• Of textures. ( full of small openings or gaps)
  • usage: "an open texture"; "a loose weave"
  • synonyms: loose
• Having no protecting cover or enclosure.
  • usage: "an open boat"; "an open fire"; "open sports cars"
• Set theory. ( of an interval that contains neither of its endpoints)
• Not brought to a conclusion; subject to further thought.
  • usage: "an open question"; "our position on this bill is still undecided"; "our lawsuit is still undetermined"
  • synonyms: undecided, undetermined, unresolved
• Not sealed or having been unsealed.
  • usage: "the letter was already open"; "the opened package lay on the table"
  • synonyms: opened
• Without undue constriction as from e. G. Tenseness or inhibition.
  • usage: "the clarity and resonance of an open tone"; "her natural and open response"
• Ready or willing to receive favorably.
  • usage: "receptive to the proposals"
  • synonyms: receptive
• Open and observable; not secret or hidden.
  • usage: "an overt lie"; "overt hostility"; "overt intelligence gathering"; "open ballots"
  • synonyms: overt
• Not requiring union membership.
  • usage: "an open shop employs nonunion workers"
• Possibly accepting or permitting.
  • usage: "a passage capable of misinterpretation"; "open to interpretation"; "an issue open to question"; "the time is fixed by the director and players and therefore subject to much variation"
  • synonyms: capable, subject
• Affording free passage or view.
  • usage: "a clear view"; "a clear path to victory"; "open waters"; "the open countryside"
  • synonyms: clear
• Openly straightforward and direct without reserve or secretiveness.
  • usage: "his candid eyes"; "an open and trusting nature"; "a heart-to-heart talk"
  • synonyms: candid, heart-to-heart
• Ready for business.
  • usage: "the stores are open"