Definition & Meaning of "chuffed"in English

What does "chuffed" mean in British slang?

It is used in British English to mean very pleased, proud, or delighted about something. People typically say "I'm well chuffed with my results" or "She was chuffed to bits when she got the job." The term originated in Northern English dialect in the 19th or early 20th century, and has since spread across the UK, becoming one of the most recognized British slang words for happiness.