The phrase "simple bun" refers to a hairstyle where the hair is gathered into a neat and basic bun shape. It is a straightforward and uncomplicated way of styling the hair. Full definition
Fluffy and light, it's amazing how a simple bun can elevate even the most mundane lunchtime offering. (freerangecookies.com)
Once you've mastered these simple buns, you can use the same dough to make James's teatime Chelsea buns and delicious fruit loaf (see «Goes well with»)-- just mix up the spices a bit and swap the currants for other dried fruits and nuts. (bbcgoodfood.com)