revealer

verb (used with object)

1. to make known; disclose; divulge: to reveal a secret.
2. to lay open to view; display; exhibit.

noun

3. an act or instance of revealing; revelation; disclosure.
4. Architecture.
   1. the part of the jamb of a window or door opening between the outer wall surface and the window or door frame.
   2. the whole jamb of an opening between the outer and inner surfaces of a wall.
5. the framework or edge of an automobile window.

verb (tr)

1. (may take a clause as object or an infinitive) to disclose (a secret); divulge
2. to expose to view or show (something concealed)
3. (of God) to disclose (divine truths) either directly or through the medium of prophets, etc

noun

4. architect the vertical side of an opening in a wall, esp the side of a window or door between the frame and the front of the wall

v.

late 14c., from Old French reveler “reveal” (14c.), from Latin revelare “reveal, uncover, disclose,” literally “unveil,” from re- “opposite of” (see re-) + velare “to cover, veil,” from velum “a veil” (see veil (n.)). Related: Revealed; revealing.