Word/name. Arabic. Meaning. Lion. Haydar (Arabic: Øيدر‎‎; also spelled Heidar, Haider, Haidar, Hyder, Hayder, Hajdar, Hidar, Hauldar, Haidhar, Heydar or Jaider) is one of many Arabic male given names for "lion", each denoting some aspect of the animal.