The term 'WALL CRAWLER' can be broken down into two words: 'WALL' and 'CRAWLER'. The first word, 'WALL', is a noun that refers to a structure made of brick, stone, or other materials, typically used to enclose an area or divide a space. The second word, 'CRAWLER', is a verb that describes the act of moving slowly and carefully, often on hands and knees. When combined, the term 'WALL CRAWLER' can refer to someone who moves slowly and carefully along walls, such as a climber or a spider. The crossword solution for this term is 'IVY', which is a type of climbing plant with woody stems and leaves that grow in a spiral pattern. IVY is often used to cover walls, making it a fitting solution for the term 'WALL CRAWLER'.