Omentum is a term used to describe the double layer of peritoneum that covers and supports the abdominal organs. It is also known as the greater omentum or gastrocolic omentum. CAUL is an acronym for the Latin phrase 'Cum Adipisci Utilem Laborem', which translates to 'with useful work, gain'. This phrase is often used to describe the importance of hard work and dedication in achieving success.