It implies that the person is being tricked or manipulated into believing something that isn't true, usually to hide the truth or achieve a specific goal.
Here's a breakdown of its meaning:
* Throw dust: This refers to the action of scattering dust, which can obscure vision and make it difficult to see clearly.
* Eyes: This refers to the ability to see and understand.
* To throw dust in someone's eyes: This means to create a situation that obscures their vision and prevents them from seeing the truth.
Example:
* "The politician tried to throw dust in the voters' eyes by promising unrealistic benefits."
* "The magician threw dust in the audience's eyes with his sleight of hand tricks."
The idiom can be used in both literal and figurative senses. It can be used to describe a physical act of throwing dust, or it can be used metaphorically to describe any act of deception or misdirection.