hide; keep secret; keep sb/sth from being seen; cover; screen
"Muslim women hide their faces"
"hide the money"
"She conceals her anger well"
Concealing from him all knowledge of who or what he was.
出自： Sir W. Scott
Augustus had always great difficulty in concealing his dislike for Tiberius as a son-in-law.
出自： R. Graves
He didn't conceal anything from you.