- the disciple who betrayed Jesus. Mark 3:19.
- a person treacherous enough to betray a friend; traitor.
- one of the 12 apostles (not Judas Iscariot). Luke 6:16; Acts 1:13; John 14:22.
- a brother of James (and possibly of Jesus). Matthew 13:55; Mark 6:3.
- a peephole, as in an entrance door or the door of a prison cell.
- (of an animal) used as a decoy to lead other animals to slaughter: A Judas goat led sheep into the abattoir.
- a peephole or a very small window in a door
- the apostle who betrayed Jesus to his enemies for 30 pieces of silver (Luke 22:3–6, 47–48)
- a person who betrays a friend; traitor
- a brother or relative of James and also of Jesus (Matthew 13:55). This figure, Thaddaeus, and Jude were probably identical
- denoting an animal or bird used to lure others of its kind or lead them to slaughter
