bedwarmer

noun

1. (historical)A covered metal pan attached to a long handle, holding live coals and used to warm a bed.
2. (broadly)A concubine or mistress.

   “"You speak of lowly! You, once a slave whore whose only purpose wad bed hopping! You, a Cultellrin whore! You may be a queen, but that ends now! This moment! From now on you are nothing more than my bedwarmer! You'd better pray to your god that I never tire of you, for if I do, I'll split your gut all the way up to your neck!"”

   “unknown year, His Bedwarmer's Wife, Red Auza "Nah, I'ts fine, Ley. Because from now on I won't bring any woman here. You will be my bedwarmer."”

   “You're more than my bed-warmer. If you decide to stay with me, I'll keep you safe and give you room to grow into the incredible woman I know you can be, […]”

   “"But my appetite for other delights has just awoken, so if you will excuse me Brothers, I shall take a bottle of brandy and my bed-warmer for tonight, and I shall you all In^([sic]) the morning." and turning to Theresa he grabbsed her arm roughly and dragged her to her feet, […]”