The term 'Filled with Frills' can be summarized by the crossword solution 'LACY', which is a four-letter word. LACY is an adjective that describes something as being delicate, intricate, and having a lot of ornamental details. It is often used to describe clothing, such as lace dresses or LACY lingerie. The term 'filled with frills' implies that something is decorated with a lot of intricate details, making it look elegant and luxurious.