Synonyms for Interlocking (same or very similar meaning)
WordNet sense 1 (contact by fitting together):
engagement, mesh, meshingWordNet sense 2 (linked or locked closely together as by dovetailing):
interwoven, interlacing, interlinkingWordNet sense 3 (complicated in structure; consisting of interconnected parts):
complex, complexWordNet sense 4 (the act of interlocking or meshing):
interlockFrom the ODE community, based on WordNetadd/edit