1. A pulley system or mechanical device consisting of a chain and pulley arrangement used to lift or lower heavy objects with reduced effort.
Usage: technical; plural form of chainfall

Examples

• The warehouse workers used chainfalls to lift the heavy machinery into place.
• Chainfalls are essential equipment in many industrial settings.
• The mechanic attached the chainfalls to the engine block to remove it from the vehicle.
• Modern chainfalls can safely lift loads of several tons.
• The construction crew relied on chainfalls to move materials up the scaffolding.