a wild boar; to fight
Phonosemantic compound. 豕 represents the meaning and 虍 represents the sound.
《說文》：“豦，鬬相丮不解也。从豕、虍。豕虍之鬬不解也。讀若蘮蒘草之蘮。司馬相如說豦，封豕之屬。一曰虎兩足舉。”