buff

1. (countable, uncountable)Undyed leather from the skin of buffalo or similar animals.

   a soft thick undyed leather from the skins of e.g. buffalo or oxen

2. (countable, uncountable)A tool, often one covered with buff leather, used for polishing.

   an implement consisting of soft material mounted on a block; used for polishing (as in manicuring)

3. (countable, uncountable)A brownish yellow colour.

4. (countable, uncountable)A military coat made of buff leather.

5. (countable, informal, uncountable)A person who is very interested in a particular subject.

   He’s a real history buff. He knows everything there is to know about the civil war.

   Fan, Enthusiast

6. (countable, uncountable)A change introduced in a patch that makes a character, item, or attack stronger.

7. (countable, uncountable)An effect that makes a character or item stronger.

   I just picked up an epic damage buff! Let's go gank the other team!

8. (countable, uncountable)Compressive coupler force that occurs during a slack bunched condition.

9. (colloquial, countable, uncountable)The bare skin.

   to strip to the buff

   bare skin

10. (countable, uncountable)The greyish viscid substance constituting the buffy coat.

11. (countable, uncountable)Any substance used to dilute (street) drugs in order to increase profits.

    2014, “Aldergrove’s 856 gang busted, $400,000 in drugs seized,” CBC News, 30 July, 2014, Police say this 20 ton hydraulic jack was used to press mixtures of cocaine and “buff” into brick.

12. (countable, informal, uncountable)A buffalo, or the meat of a buffalo.

1. I know Tom is a movie buff.

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2. Here's a question for you trivia buffs.

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3. I didn't know Tom was a film buff.

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4. I know that Tom is a movie buff.

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5. I didn't know that Tom was a film buff.

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