Bokeh refers to the æsthetic quality of the out-of-focus areas of an image produced by a camera lens using a shallow depth of field. This basically means you can have a subject in focus with the background blurry.
Bokeh shape filters alter the shape of out of focus lights. It's much easier to show than to explain, so here are some images from the meeting!

At our next meeting, we'll be covering the basics of photography. F-stops, ISO, aperture... all that jazz! If you're new to photography, this is the meeting for you! If you're not.. it's a great way to refresh your memory! We hope to see you there!