The noun open has 4 senses (first 2 from tagged texts)
1. (1) open, clear -- (a clear or unobstructed space or expanse of land or water; "finally broke out of the forest into the open")
2. (1) outdoors, out-of-doors, open air, open -- (where the air is unconfined; "he wanted to get outdoors a little"; "the concert was held in the open air"; "camping in the open")
3. open -- (a tournament in which both professionals and amateurs may play)
4. open, surface -- (information that has become public; "all the reports were out in the open"; "the facts had been brought to the surface")
Overview of verb open
The verb open has 11 senses (first 9 from tagged texts)
1. (68) open, open up -- (cause to open or to become open; "Mary opened the car door")
2. (45) open, open up -- (start to operate or function or cause to start operating or functioning; "open a business")
3. (17) open, open up -- (become open; "The door opened")
4. (14) open -- (begin or set in action, of meetings, speeches, recitals, etc.; "He opened the meeting with a long speech")
5. (4) unfold, spread, spread out, open -- (spread out or open from a closed or folded state; "open the map"; "spread your arms")
6. (4) open, open up -- (make available; "This opens up new possibilities")
7. (2) open, open up -- (become available; "an opportunity opened up")
8. (1) open -- (have an opening or passage or outlet; "The bedrooms open into the hall")
9. (1) open -- (make the opening move; "Kasparov opened with a standard opening")
10. afford, open, give -- (afford access to; "the door opens to the patio"; "The French doors give onto a terrace")
11. open -- (display the contents of a file or start an application as on a computer)
Overview of adj open
The adj open has 21 senses (first 14 from tagged texts)
1. (34) open, unfastened -- (affording unobstructed entrance and exit; not shut or closed; "an open door"; "they left the door open")
2. (17) open -- (affording free passage or access; "open drains"; "the road is open to traffic"; "open ranks")
3. (13) exposed, open -- (with no protection or shield; "the exposed northeast frontier"; "open to the weather"; "an open wound")
4. (7) open -- (open to or in view of all; "an open protest"; "an open letter to the editor")
5. (4) open, opened -- (used of mouth or eyes; "keep your eyes open"; "his mouth slightly opened")
6. (4) open -- (not having been filled; "the job is still open")
7. (3) open -- (accessible to all; "open season"; "an open economy")
8. (2) assailable, undefendable, undefended, open -- (not defended or capable of being defended; "an open city"; "open to attack")
9. (2) loose, open -- ((of textures) full of small openings or gaps; "an open texture"; "a loose weave")
10. (2) open -- (having no protecting cover or enclosure; "an open boat"; "an open fire"; "open sports cars")
11. (1) open -- ((set theory) of an interval that contains neither of its endpoints)
12. (1) open, undecided, undetermined, unresolved -- (not brought to a conclusion; subject to further thought; "an open question"; "our position on this bill is still undecided"; "our lawsuit is still undetermined")
13. (1) open, opened -- (not sealed or having been unsealed; "the letter was already open"; "the opened package lay on the table")
14. (1) open -- (without undue constriction as from e.g. tenseness or inhibition; "the clarity and resonance of an open tone"; "her natural and open response")
15. receptive, open -- (ready or willing to receive favorably; "receptive to the proposals")
16. overt, open -- (open and observable; not secret or hidden; "an overt lie"; "overt hostility"; "overt intelligence gathering"; "open ballots")
17. open -- (not requiring union membership; "an open shop employs nonunion workers")
18. capable, open, subject -- (possibly accepting or permitting; "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")
19. clear, open -- (affording free passage or view; "a clear view"; "a clear path to victory"; "open waters"; "the open countryside")
20. candid, open, heart-to-heart -- (openly straightforward and direct without reserve or secretiveness; "his candid eyes"; "an open and trusting nature"; "a heart-to-heart talk")
21. open -- (ready for business; "the stores are open")