Physiology The concealment or screening of one sensory process or sensation by another.(noun)
A piece of theatrical scenery used to conceal a part of the stage from the audience.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "masking" in a sentence
"Built upon decades of lying, deceit and sleight of hand, the European Union has been carefully crafted from its beginnings as a simple treaty on shared access to coal and steel, through an ongoing succession of treaties over a 60-year period to the final implementation of an imperial constitution, as usual with a title masking its true nature, the Lisbon Treaty."
"However he made a mistake in masking his collar number which sadly helps to cast the incident in an ominous light."
"You could check to see if the firing pins are stuck by putting a piece of thin masking tape on the back of some spent shells and see if the tape is marked or punctured."