The term JOIN BY INTERWEAVING can be solved by the crossword solution SPLICE, which is a six-letter word. Splicing is a process of joining two pieces of material together by interweaving them. This technique is commonly used in rope making, weaving, and other textile arts. It is also used in electrical wiring, where two or more wires are joined together to form a single wire. Splicing is also used in genetics, where two strands of DNA are joined together to form a single strand.