OPEN (3)

O″pen v. t. [imp. & p. p. Opened (?); p. pr. & vb. n. Opening.] [[AS. openian. See Open,a.]] 1. 1. To make or set open; to render free of access; to unclose; to unbar; to unlock; to remove any fastening or covering from; as, to open a door; to open a box; to open a room; to open a letter.
And all the windows of my heart I open to the day. Whittier. 2. 2. To spread; to expand; as, to open the hand.
3. 3. To disclose; to reveal; to interpret; to explain.
The king opened himself to some of his council, that he was sorry for the earl's death. Bacon. Unto thee have I opened my cause. Jer. xx. 12. While he opened to us the Scriptures. Luke xxiv. 32. 4. 4. To make known; to discover; also, to render available or accessible for settlements, trade, etc.
The English did adventure far for to open the North parts of America. Abp. Abbot. 5. 5. To enter upon; to begin; as, to open a discussion; to open fire upon an enemy; to open trade, or correspondence; to open a case in court, or a meeting.
6. 6. To loosen or make less compact; as, to open matted cotton by separating the fibers.
To open one's mouth, to speak. — To open up, to lay open; to discover; to disclose. Poetry that had opened up so many delightful views into the character and condition of our “bold peasantry, their country's pride.” Prof. Wilson.