Daf Yomi - Yoma 50 - Timna the Concubine of Esau

Rashi states that there are five korban חטאות that have a דין of מיתה on them. The Ritva brings from a פסיקתא that an acronym to remember them by is ותמנע.

ו - ולד חטאת
ת - תמורה
מ - מתה בעליה
נ - נתכפרו הבעלים
ע - עברה שנתה

תמנע was the concubine of עשו. Perhaps we can say בדרך דרוש based on a Gemora in סנהדרין. She was a daughter of a king and wanted to convert and the אבות did not accept her. She went and married עשו proclaiming that it is preferable to be the maidservant of this great nation rather than being a princess in a lowly nation. It is her name that we utilize to illustrate these korbanos which are possul and invalidated and results in death, yet they are still regarded as a korban.