noun
(countable, uncountable) 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.
(countable, uncountable) A soothing medicated lotion for the eyes.
(uncountable, slang, figurative) Camouflage; disguise; false front; pretense; nonsense.
verb
To fool with nonsense or flattery.
(intelligence) To keep information secret by sending false information to many people in one's own organization, and correct information to a select few.