1. a narrow passage or tunnel through which a person must crawl, especially in mining, construction, or building inspection.
Usage: technical; often used in industrial and construction contexts
2. a low, confined space beneath a building or structure, typically used for access to utilities and pipes.
Usage: construction and real estate

Examples

• The inspector had to navigate the crawlway to check the foundation for damage.
• Workers installed new plumbing through the crawlway beneath the house.
• The mine's crawlway was barely wide enough for one person to pass through.
• Access to the electrical lines required descending into the crawlway.
• The home inspector recommended sealing the crawlway to prevent moisture buildup.