Adler classified this entry as 'Ps'. [Glosses on the Psalms], without further elaboration. The headword is in fact extracted from Psalm 33.8 LXX. It is the future indicative active, third person singular (and future indicative middle, second person singular), of the verb paremba/llw, I put/throw in beside; see generally LSJ s.v. and cf. pi 544.
[1] The gloss is the future indicative middle, third person singular, of the verb parata/ssw, I place side by side/draw up in battle-order; see generally LSJ s.v., and cf. pi 546 gloss. The headword is identically glossed in Anecdota Oxoniensia (Cramer) 2.464.13.