Definition: A smooth, shiny substance that forms the inner layer of some shells, often used to make jewelry and decorative items.

Example: The necklace was made of nacre, giving it a beautiful, iridescent glow.

Definition: Having a similarity or likeness to a birthmark or mole on the skin.

Example: The doctor noted that the skin lesion was naevoid in appearance.

Definition: A raised or discolored spot on the skin that can be present at birth or develop later. These spots are usually harmless and are often referred to as moles.

Example: The dermatologist examined the naevus to ensure it was not harmful.

Definition: A type of water nymph from Greek mythology who is associated with rivers, springs, and other bodies of water.

Example: In ancient stories, a naiad would often be seen dancing in the clear waters of a stream.

Definition: Having no nails or lacking nails.

Example: The nailless design of the furniture made it safer for children.

Definition: A chemical substance used to kill insects, particularly mosquitoes and pests that harm crops.

Example: Farmers often use naled to protect their crops from harmful insects.

Definition: A medication that is derived from morphine and is used to help with breathing problems caused by narcotic overdoses.

Example: The doctor administered nalorphine to reverse the effects of the overdose.

Definition: A medication used to reverse the effects of narcotic drugs, particularly in cases of overdose.

Example: The paramedics administered naloxone to the patient who had overdosed on opioids.

Definition: A medication that blocks the effects of narcotic drugs and is used to treat addiction and overdose.

Example: The doctor prescribed naltrexone to help the patient recover from opioid addiction.

Definition: A type of anabolic steroid that is derived from testosterone and is used to promote muscle growth and improve physical performance.

Example: Athletes sometimes use nandrolone to enhance their strength and endurance during competitions.