Idiom of the day :- Buff

Usage, examples and definition of the Idiom :-

A person who is devoted to a particular subject and therefore knows a lot about it / a knowledgeable enthusiast A : My son Fred goes to the cinema every night. He hasn’t missed a day for three years. B : How interesting, I didn’t know your son was a film buff. A : He doesn’t know anything at all about films — he works in the box office selling tickets ! The word originated in the last century in New York City where amateur fire-fighters helped the official firemen to put out blazes. The amateur enthusiasts were called buffs because of their coats which were made out of buff leather. This was a pale yellow leather made from buffalo hide. Today its meaning has widened so that one can use it to describe people who are interested in may different subjects; you could meet a wine buff, a music buff, a football buff or a chess buff for example.