WordNet (r) 3.0 (2006):
blank out v 1: be unable to remember; "I'm drawing a blank"; "You are blocking the name of your first wife!" [syn: forget, block, blank out, draw a blank] [ant: call back, call up, recall, recollect, remember, retrieve, think] 2: cut out, as for political reasons; "several line in the report were blanked out"