Serfdom is the status of peasants under feudalism. It was a condition of bondage or modified slavery. Serfs who occupied a plot of land were required to work for the Lord of the Manor who owned that land, and in return were entitled to protection, justice and the right to exploit certain fields within the manor to maintain their own subsistence. Serfs could also be drafted into their lord's army.
Serfdom as an institution in the West apparently only remained in Arendia. The conditions of serfdom could vary. Serfs like Lammer and Detton were perpetually near starving, while Lelldorin claimed that his father, the lord of Wildantor, kept his serfs safe and well fed.