Engineering Features

noun a solid structure made of stones or bricks, typically used as a barrier or boundary

• The ancient castle was surrounded by a sturdy stone wall for protection.
• I love sitting on top of the stone wall in the park and watching people go by.
• Let's meet by the stone wall near the entrance to the concert.
• She put up a stone wall of defense whenever someone tried to get too close.

noun a structure used to control the flow of water, such as a gate in a dam or canal

• The water gate at the dam controls the flow of water into the reservoir.
• Don't forget to close the water gate after you're done watering the garden.
• I accidentally left the water gate open and flooded the yard.
• The scandal was like opening a water gate of corruption in the government.