The headword is the aorist active participle, masculine (and neuter) genitive plural, of the verb paremba/llw, "I put/throw in beside"; see generally LSJ s.v., and cf. pi 543. It must be quoted from somewhere, and Theodoridis (below) suggests Theodoret -- citing Aquila and Symmachus -- on Psalm 52.6 LXX (PG 80.1261c).
[1] The glossing participle is the same form, but comes from the verb kuklo/w, "I encircle"; see LSJ s.v. and pi 1305 gloss. The headword is identically glossed in the Synagoge, Lexica Segueriana 332.14, and Photius, Lexicon pi378 Theodoridis.