chatta'ah (Hebrew #2403)
from 2398; an offence (sometimes habitual sinfulness), and its penalty, occasion, sacrifice, or expiation; also (concretely) an offender
KJV usage: punishment (of sin), purifying(-fication for sin), sin(-ner, offering).
Pronounce: khat-taw-aw'
Origin: or chattacth {khat-tawth'}