The term 'Border Neatener' is a job description for an EDGER, which is a five-letter word. An EDGER is a person who is responsible for trimming and maintaining the edges of lawns, gardens, and other outdoor areas. They use tools such as edging shears, edging knives, and edging irons to create neat, clean borders around these areas. The EDGER's job is to ensure that the edges are even and aesthetically pleasing.