Harold Harefoot ha·rold·ha·refoot uncommon noun 1. illegitimate son of Canute who seized the throne of England in 1037 (died in 1040) SynonymsHarold IKing Harold IHarold HarefootHarefoot Related words Broader terms King of England WordNet 2.1 (Princeton University). WordNet 2.1 Copyright Princeton University. All rights reserved.