H2403 חַטָּאָה (khat-taw-aw')

KJV renderings: punishment (of sin), purifying(-fication for sin), sin(-ner, offering).
Strong's definition: an offence (sometimes habitual sinfulness), and its penalty, occasion, sacrifice, or expiation; also (concretely) an offender
Derivation: or חַטָּאת; from H2398 (חָטָא);

From James Strong's public-domain dictionaries (H), JSON edition by OpenScriptures (CC-BY-SA). Every dotted-underline word in the text links here.