Wiktionary
blot out
vb. 1 (&lit blot out English) 2 (label en transitive) To obscure.
WordNet
blot out
v. make undecipherable or imperceptible by obscuring or concealing; "a hidden message"; "a veiled threat" [syn: obscure, obliterate, veil, hide]
Usage examples of "blot out".
If he ever forgot she was the palace brat, he would be in trouble, for what hidden censor would blot out a dream-turned-real?