What is "eldir"

In Norse mythology, Eldir ( Old Norse "fire-stoker") is a servant of Ægir. At the beginning of Lokasenna, Loki kills another servant, Fimafeng, and is driven from Ægir's hall into the forest by the gods who were assembled at the feasting table. Upon his return, Loki confronts Eldir outside and exchanges hostile words with the servant before again entering the hall to "mix their mead with venom".