The term 'firmly plants' can be summarized by the crossword solution 'EMBEDS, ' which is a six-letter word. To embed something means to firmly fix it in place, usually by surrounding it with other material. This term is often used in construction, where nails, screws, and other fasteners are used to secure objects in place. It can also be used figuratively, such as when someone is deeply rooted in a certain belief or lifestyle.