noun
Definition: The act of causing fertilized eggs to become unviable by harming the developing embryo inside, often through methods like shaking, piercing, freezing, or applying oil, while keeping the shell intact.
Example: The addling of the eggs was a controversial practice among some conservationists.
verb
Definition: To confuse or muddle someone's thoughts or ideas, often making it difficult for them to think clearly.
Example: The complicated instructions were addling my mind, making it hard to focus.