MASS GARB is a term used to describe the traditional clothing worn by members of the clergy in the Catholic Church. ALBS (4 letters) is an abbreviation for the Latin phrase 'alba vestis, ' which translates to 'white garment.' ALB (3 letters) is an abbreviation for the Latin phrase 'albae vestes, ' which translates to 'white garments.' Both terms refer to the white robes worn by priests and other members of the clergy during Mass.