Final answer:
A brick or timber rejected as being of inferior quality is known as cull.
Step-by-step explanation:
A brick or timber rejected as being of inferior quality is known as cull. Culling refers to the process of removing or segregating materials that do not meet the required standards or specifications.
It is commonly used in construction and manufacturing industries to ensure that only high-quality materials are used in the final products. For example, if a brick is found to be cracked or damaged, it may be culled or discarded instead of being used in a building project.