Meaning A boy's name of Gaelic origin, it means "Rock." Origin of Fearghus Gaelic , Irish +-100%Zoom level changed to 1 Popular Middle Names Pronunciation 🔊 Listen Fearghus Similar Names Allen Ferghus Fergie Feargus Piaras Allan Allon Bealantin Gille Raibeart Year by Year Popularity of Fearghus