Vine's Expository Dictionary of NT Words
"that which is wiped off" (akin to peripsao, "to wipe off all round;" peri, "around," psao, "to wipe"), hence, "offscouring," is used metaphorically in 1 Corinthians 4:13 . This and the synonymous word perikatharma, "refuse, rubbish," "were used especially of condemned criminals of the lowest classes, who were sacrificed as expiatory offerings ... because of their degraded life" (Lightfoot).
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Vines, W. E., M. A. Entry for 'Offscouring'. Vine's Expository Dictionary of NT Words. https://www.studylight.org/dictionaries/eng/ved/o/offscouring.html. 1940.