Dictionary: “開く”

to open (e.g. doors)

to bloom;to unfold;to spread out

to open (e.g. business, etc.)

to open (for business, e.g. in the morning)

to be empty

to be wide (gap, etc.);to widen

to be vacant;to be available;to be free

to hold (meeting, party, etc.);to give;to open

to be open (e.g. neckline, etc.)

to found (nation, dynasty, sect, etc.);to open (a new business);to set up;to establish;to start

to have been opened (of one's eyes, mouth, etc.)

to open (ports, borders, etc.)

to come to an end

to open (an account)

to open (one's eyes, mouth, etc.)

to open up (new land, path, etc.);to clear;to develop

to have a hole;to form a gap;to have an interval (between events)

to open (a file, etc.)

to extract (root);to reduce (equation)

to cut open (fish)

to change (kanji into hiragana)

to flare (e.g. skirt)

to slacken (into a poor posture)