Definition of "buff" []

• A soft, thick, undyed leather made chiefly from the skins of buffalo, elk, or oxen. (noun)
• A military uniform coat made of such leather. (noun)
• A pale, light, or moderate yellowish pink to yellow, including moderate orange-yellow to light yellowish brown. (noun)
• Informal Bare skin: swimming in the buff. (noun)
• A piece of soft material, such as velvet or leather, often mounted on a block and used for polishing. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The next thing was to set the village tailor at work upon a coat of that thick strong leather, dressed soft and pliant, which they called buff, to wear under his armour."
• "The buff is crucial even though they do look kinda ridiculous."
• "In Pennsylvania, Tyler Dix, a 16-year-old movie buff, is wide awake by 7 a.m. to cook breakfast for his younger siblings."