Lewis & Short

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.