Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. implexus (inpl-), a, um, Part., from implecto.
2. implexus, ūs, m. [implecto], an entwining, infolding, embrace (post-Aug. and only in the abl. sing.): polypus cavernam cancellato bracchiorum implexu claudit, Plin. 9, 51, 74, § 164: ut terra et aqua mutuo implexu jungerentur, id. 2, 65, 66, § 166.