Where does “drēma” come from?
drēma (Old Frisian) comes from Proto-West Germanic *draumijan, from Proto-Germanic draumijaną, from Proto-Germanic draumaz, from Proto-Germanic draugmaz, from Proto-Indo-European dʰrowgʰ-mos, from Proto-Indo-European dʰrewgʰ-, from Proto-Indo-European dʰer- — to support; to hold.
Ancestry of “drēma”, step by step
Words derived from “drēma”