What is SPOTLIGHT?
A lamp designed to produce a narrow beam angle to illuminate a specifically defined area.
Usually a reflector bulb type with beam angle factory preset between 10 and 30 degrees.
May also be a non-reflector lamp which has a small area filament and lamp's main purpose is designed for specific area lighting, not designed specifically general lighting. Non-reflector spotlights tend to be very intense and have shorter life design than non-reflector floodlights.
references for this page: SPOTLIGHT, SPOTLIGHTS
reference to this page: FLOODLIGHT