The term 'Lintel Companion' is a job title that refers to a JAMB, which is a four-letter word. A JAMB is a vertical support beam used in the construction of door and window frames. The Lintel Companion is responsible for installing and maintaining these beams, ensuring that they are properly secured and that they provide adequate support. They must also be able to identify any potential problems with the lintels and take corrective action.