Brick

A brick was a block of mixed hard clay used for construction and masonry.

In 2370, Odo observed to Fallit Kot, who had served eight years in a Romulan labor camp, that he walked like someone with a lot of weight on his shoulders. Kot replied that it must be the memory of the Romulan bricks he had carried for eight years. 

That same year, while investigating the newly discovered emergent lifeform in Keystone City on the holodeck, Counselor Deanna Troi was hit by a wall of bricks.