Bokeh

 
I learned on Kate (aka Country Girl)'s blog the other day what bokeh means. I can't do better than quote her:-

"Bokeh is pronounced bow-kay or bow-keh and it refers to that lovely out-of-focus light and all the different shapes and colors you see in the background of photos taken with a digital camera. It is created by light and and the glass in your lens and distance and wind and focus. It's a Japanese term for the subjective aesthetic quality of out-of-focus areas of a photographic image."