Noun jude has 2 senses

• jude(n = noun.person) judas, saint jude, st. jude, thaddaeus - (New Testament) supposed brother of St. James; one of the Apostles who is invoked in prayer when a situation seems hopeless;
is a kind of apostle, saint

• jude(n = noun.communication) epistle of jude - a New Testament book attributed to Saint Jude;
is a kind of epistle
is a part of new testament