A female jötunn killed by Thor. She is mentioned in a verse by the tenth or eleventh-century Icelandic skald Þorbjörn dísarskáld, and quoted by Snorri Sturluson in Skáldskaparmál:
- Thou didst smite the head of Keila,
Smash Kjallandi altogether,
- Ere thou slewest Lútr and Leidi,
Didst spill the blood of Búseyra;
Didst hold back Hengjankjapta,
Hyrrokkin died before;
Yet sooner in like fashion
Svívör from life was taken.
- Skáldskaparmál, 4.