A “Luffy” almost always refers to Monkey D. Luffy, the main character of the manga and anime series One Piece.

Basic meaning

Monkey D. Luffy is a fictional pirate who wants to find the legendary treasure “One Piece” and become the Pirate King. He is known for his straw hat, his cheerful personality, and his ability to stretch like rubber after eating a special “Devil Fruit.”

In the One Piece story

Luffy is the captain of the Straw Hat Pirates, a crew that travels the seas having adventures and fighting powerful enemies. His rubber body lets him stretch his arms and legs for long‑range punches and other creative attacks.

Name and usage

When fans say “Luffy,” they almost always mean this character, not a general English word. The name is part of his full name “Monkey D. Luffy,” but in conversation people usually just call him “Luffy.”