The term 'Lamp-Socket Insert' refers to a device that is used to hold a lightbulb in place. It is typically made of metal or plastic and is inserted into the socket of a lamp or other lighting fixture. The insert is designed to securely hold the lightbulb in place, allowing it to be easily replaced when needed. The term 'Lightbulb' is a 9 letter word that is used to describe the type of bulb that is held in place by the Lamp-Socket Insert.