The term 'BRICKLAYER's Carrier' refers to a person who carries bricks and other materials for a BRICKLAYER. The three-letter acronym for this job is HOD, which stands for 'HOD Carrier'. A HOD Carrier is responsible for transporting bricks, mortar, and other materials to the BRICKLAYER, as well as cleaning up the work area after the job is done. They are an essential part of the bricklaying process, ensuring that the BRICKLAYER has the necessary materials to complete the job.