The headword, evidently extracted from somewhere, is the causative aorist middle participle, masculine nominative singular, of the verb pari/sthmi, I come and stand by, become disposed, submit to judgment; cf. pi 447, pi 448, pi 658, pi 659, and see generally LSJ s.v., esp. (in respect of the present entry) sense C.II.
[1] The first gloss is the aorist active participle, masculine nominative singular, of the verb paralamba/nw, I take, receive; see generally LSJ s.v. The second is the same form of ai(re/w, I take, catch, grasp, understand; see generally LSJ s.v. The last is the aorist middle participle, masculine nominative singular, of katastre/fw, I turn down, turn around, subdue; see generally LSJ s.v.
The headword is identically glossed in Photius' Lexicon (pi309 Theodoridis), Lexica Segueriana 330.29, and Etymologicum Magnum 652.56 (Kallierges), and similarly glossed in the Synagoge and elsewhere.