Meaning of Button: A cute and possibly diminutive nickname, often used for someone who is small or charming.
Literal Meaning of Button: Literally, it refers to a small fastener used in clothing, here used as a term of endearment.
Popularity: High.
Origin: English.
Example:
Emily: “Morning, Button! Did you sleep well?”
Liam: “Pretty good, Emily. Thanks for asking.”