Citations:yashmak

Noun: "(television, slang) A diffuser that covers the lower half of a studio lamp"

 * 2013, Alan Bermingham, Location Lighting for Television (page 95)
 * Often it is necessary to have more precise control than that offered by a half-scrim. This can be achieved using a veil, net or yashmak, an open-ended wire frame fitted with black nets to give light loss of &frac12; stop, 1 stop and 1&frac12; stops.