eyewash

The washing out of the eyes with copious solution (usually water alone) to quickly remove an irritant, as for example in laboratories and industrial plants; the washing solution itself.

A soothing medicated lotion for the eyes.

(slang, figurative) Something deceptive and superficially pleasing but without accurate or genuine substance: camouflage; disguise; false front; pretense; nonsense.

To fool with nonsense or flattery.

To keep information secret by sending false information to many people in one's own organization, and correct information to a select few.