Definitions

1. noun

a person or thing that warns or gives notice of something

“The weather warner on the TV predicted a storm for tonight.”

2. verb

to give warning or notice of something

“The doctor warned the patient of the risks associated with the surgery.”

3. noun

a person or thing that warns or gives notice in a literary or dramatic work

“The warner in Shakespeare’s play was the character who foretold the doom of the king.”