Biblical Meaning: The name Rahab is a Biblical baby name. In Biblical the meaning of the name Rahab is: Proud; quarrelsome (applied to Egypt). SoulUrge Number: 2.Expression Number: 3. People with this name have a deep inner desire for love and companionship, and want to work with others to achieve peace and harmony.he name Rahab is a Biblical baby name. In Biblical the meaning of the name Rahab is: Proud; quarrelsome (applied to Egypt). SoulUrge Number: 2. Expression Number: 3.