"Bokeh" comes from the Greek word "boukali" that means "bottle" and, as elekm correctly put it, the effect that sharp images usually produce on film in the cameras that are held by drunken photographers. Or, the result on the film that someone obtains when he exchanges his/her Planar by a cheaper lens made out of a cut Bottle Bottom End (the cut BBE's are what has remained from the bottles used by Blues Guitar players for the "sliding guitar effect" (SGE) so proudly produced in the Southern Regions of the USA...)