open

Sense 1 noun

a clear or unobstructed space or expanse of land or water

finally broke out of the forest into the open

Sense 2 verb

cause to open or to become open

Mary opened the car door

Sense 3 adjective

affording unobstructed entrance and exit; not shut or closed

an open door

Sense 4 noun

where the air is unconfined

he wanted to get outdoors a little

Sense 5 verb

start to operate or function or cause to start operating or functioning

open a business

Sense 6 adjective

affording free passage or access

open drains

Sense 7 noun

a tournament in which both professionals and amateurs may play

Sense 8 verb

become open

The door opened

Sense 9 adjective

with no protection or shield

the exposed northeast frontier

Sense 10 noun

information that has become public

all the reports were out in the open

Sense 11 verb

begin or set in action, of meetings, speeches, recitals, etc.

He opened the meeting with a long speech

Sense 12 adjective

open to or in view of all

an open protest

Sense 13 verb

spread out or open from a closed or folded state

open the map

Sense 14 adjective

used of mouth or eyes

keep your eyes open

Sense 15 verb

make available

This opens up new possibilities

Sense 16 adjective

not having been filled

the job is still open

Sense 17 verb

become available

an opportunity opened up

Sense 18 adjective

accessible to all

open season

Sense 19 verb

have an opening or passage or outlet

The bedrooms open into the hall

Sense 20 adjective

not defended or capable of being defended

an open city

Sense 21 verb

make the opening move

Kasparov opened with a standard opening

Sense 22 adjective

(of textures) full of small openings or gaps

an open texture

Sense 23 verb

afford access to

the door opens to the patio

Sense 24 adjective

having no protecting cover or enclosure

an open boat

Sense 25 verb

display the contents of a file or start an application as on a computer

Sense 26 adjective

(set theory) of an interval that contains neither of its endpoints

Sense 27 adjective

not brought to a conclusion; subject to further thought

an open question

Sense 28 adjective

not sealed or having been unsealed

the letter was already open

Sense 29 adjective

without undue constriction as from e.g. tenseness or inhibition

the clarity and resonance of an open tone

Sense 30 adjective

ready or willing to receive favorably

receptive to the proposals

Sense 31 adjective

open and observable; not secret or hidden

an overt lie

Sense 32 adjective

possibly accepting or permitting

a passage capable of misinterpretation

Sense 33 adjective

affording free passage or view

a clear view

Sense 34 adjective

openly straightforward and direct without reserve or secretiveness

his candid eyes

Sense 35 adjective

ready for business

the stores are open