The term JOIN BY INTERTWINING can be solved by the crossword solution SPLICE, which is a 6-letter word. Splicing is a process of joining two pieces of material together by intertwining them. This technique is commonly used in rope making, weaving, and other textile arts. It is also used in electrical wiring and plumbing to join two pieces of material together. Splicing is a simple and effective way to join two materials together without the need for additional tools or materials.