(1):

(v. t.) To unclose; to open; - applied esp. to eggs in the sense of to hatch.

(2):

(v. t.) To lay open or expose to view; to cause to appear; to bring to light; to reveal.

(3):

(v. t.) To remove a cover or envelope from;; to set free from inclosure; to uncover.

(4):

(v. t.) To make known, as that which has been kept secret or hidden; to reveal; to expose; as, events have disclosed his designs.

(5):

(n.) Disclosure.