open (intransitive verb)

to open, lift, uncover, unpack / to bloom / to start, open (a store)

to open / to begin an event

(transitive) solve, resolve, settle (a problem, a trouble, a criminal case) / (intransitive) be solved, be settled / (intransitive) can be solved; be soluble

solution, settlement / (music) Progression from dissonance to consonance; a chord to which such progression is made; resolution

to hold a meeting

question, problem on homework etc. / a question; a matter (of time etc.) / a problem (something that needs to be dealt with); a trouble / an issue; a matter

meeting, conference

unsolved, unresolved

(attributively) unsolved