|Noah Webster's Dictionary|
1. (n.) The act of concealing; the state of being concealed.
2. (n.) A place of hiding; a secret place; a retreat from observation.
3. (n.) A secret; out of the way knowledge.
4. (n.) Suppression of such facts and circumstances as in justice ought to be made known.
Concealment (1 Occurrence)
Psalms 64:4 to shoot innocent men from ambushes. They shoot at him suddenly and fearlessly. (See NAS)