a stout dull yellow leather with a velvety surface.
3
a stick, wheel, or pad used for polishing or smoothing.
4
a person who is enthusiastically interested in and very knowledgeable about a particular subject.
a computer buff
informal：enthusiastfanfanaticdevoteeaddictloveradmirerexpertconnoisseuraficionadoauthoritypunditcognoscenteone of the cognoscentisavantfreaknutfiendmaniachamninjamavengeeknerdfundi
动词
1
polish (something).
he buffed the glass until it gleamed
同义词：
polishburnishrub uprubsmoothshinewipeclean
2
make (an element in a role-playing or video game) more powerful.
