The term 'WINDOW FOR PLANTS' can be summarized by the crossword solution 'ORIEL', which is a five-letter word. An ORIEL window is a type of bay window that projects from the main wall of a building and is supported by brackets or corbels. It is often used to provide additional light and ventilation to a room, and it is also a popular choice for greenhouses and conservatories, as it allows plants to receive more sunlight.