περικάθαρμα, περικαθαρματος, τό (περικαθαίρω, to cleanse on all sides (περί, III. 1)), off-scouring, refuse: plural, τά περικαθάρματα τοῦ κόσμου (A. V., the filth of the world), metaphorically, the most abject and despicable men, 1Co 4:13. (Epictetus diss. 3, 22, 78;purgamenta urbis, Curt. 8, 5, 8; 10, 2, 7; (see Wetstein on 1 Corinthians, the passage cited); the Sept. once for ëÉÌôÆø, the price of expiation or redemption, Pro 21:18, because the Greeks used to apply the term καθαρματα to victims sacrificed to make expiation for the people, and even to criminals who were maintained at the public expense, that on the outbreak of a pestilence or other calamity they might be offered as sacrifices to make expiation for the state.)

STRONGS NT 4027a: περικαθίζωπερικαθίζω: 1 aorist participle περικαθισας;

1. in classical Greek transitive, to bid or make to sit around, to invest, besiege, a city, a fortress.

2. intransitive, to sit around, be seated around ; so in Luk 22:55 Lachmann text