How would you explain ‘a glass-block wall’ in the context? The mistress has come back after all. Moved back in with her furniture and strange collections packed into the rooms above the kitchen. It was like a surgery to carry her bed up the stair and through the narrow cement doorways without breaking out a glass-block wall. Candelaria and Olunda went up to help, and came back with hair standing on end. She has a pet monkey, they swear. He hides and leaps on your back when you carry food into her studio. How would you explain ‘a glass-block wall’ in the sentence: It was like a surgery to carry her bed up the stair and through the narrow cement doorways without breaking out a glass-block wall? Does it mean the wall was made of glass? Thanks!