Daddy Long Legs (see it)
	Wide Base Hi Hi Overhead Stand.

Dick Pin
	Set lingo for Stacking Pin used to connect parallel sections. They are also called Tits.

Diff
	Diffusion paper; there are many types of these with varying degrees of diffusion. -submitted by Adam Baroukh

Diffusion (see it)
	Short for Wire Diffusion that actually won't diffuse light but does decrease light intensity.

Donut
	A square piece of plywood with a hole in the center, used to keep rolling stands without wheel locks in place. For critical lighting situations, donuts are often nailed to the studio floor.

Dot (see it)
	A round scrim, net or solid offered by Matthews in 3", 6", and 10" for controlling light in tight situations such as a table top.

Double Net
	Two layers of bobbinet, used on overheads, butterflys, scrims...related term double scrim. Can be both white and black; black double nets will give approximate light loss of 1.2 stops, and white double nets will give approximate light loss of 1.0 stops. Both black and white will give you reduction of light intensity and white will introduce ambient bounce.

Drop Down (see it)

The bBaby Drop Down is made with a female 5/8" receiver at one end and a baby pin at the other. In between is a hinge which when added to the end of a light boom allows the light fixture to stay level regardless of the angle of the boom. The junior Drop Down does the same thing when attached to a Junior Boom. The 45 degree Angle Drop Down mounts on a Combo Stand and allows a reflector to be used at a low angle without the Yoke or Bale creating a shadow.

DuckBill (see it)
	Bead Board Clamp or in Matthews' case a Quacker Clamp.

Duvetyne (see it)
	Cotton fabric used to make Flags, Cutters and a solid Butterfly and Overheads. On the West Coast it is considered the same as Commando Cloth is on the East Coast.