buff

BUFF noun

[ C ] uk/bʌf/ us  a computer/film/wine, etc buff
someone who knows a lot about computers/films/wine, etc

человек, разбирающийся в компьютерах/фильмах/винах и т. д.

buff adjective
 informal uk/bʌf/ us
If someone's body is buff , it looks strong and attractive, as if they have had a lot of exercise

накачанный