<p><strong>Noun:</strong></p><ul><li>something that deceives by producing a false or misleading impression of reality.</li><li>the state or condition of being deceived; misapprehension.</li><li>an instance of being deceived.</li><li>a perception, as of visual stimuli (optical illusion), that represents what is perceived in a way different from the way it is in reality.</li><li>a very thin, delicate tulle of silk or nylon having a cobwebbed appearance, for trimmings, veilings, and the like.</li><li>the act of deceiving; deception; delusion.</li></ul>