The crossword solution for the term 'Fill with Frills' is PAD, which is a three letter word. PAD is an acronym for Personal Area Network, which is a type of computer network used to connect devices within a limited area. It is typically used to connect computers, printers, and other peripherals in a home or office setting. PAD is also used to describe a type of decorative item, such as a cushion or pillow, that is filled with frills or other decorative elements.