1. a building with glass walls and roof used for growing plants
Usage: chiefly British
2. a military prison
Usage: British slang

Examples

• The gardener tended to the tomatoes in the glasshouse.
• They built a new glasshouse to protect the tropical plants from frost.
• The glasshouse was filled with exotic orchids and ferns.
• She spent hours working in the glasshouse during winter.
• The soldier was sentenced to three days in the glasshouse.
• The old glasshouse needed new panes of glass after the storm.