1. A compartment with two airtight doors that allows people or objects to move between areas of different air pressure, such as between a spacecraft and the vacuum of space.
Usage: plural form of airlock; commonly used in aerospace and space exploration contexts
2. A pocket of air trapped in a pipe or tube that blocks the flow of liquid.
Usage: plural form of airlock; commonly encountered in plumbing and hydraulic systems

Examples

• Astronauts use airlocks to safely enter and exit the spacecraft.
• The spacecraft has multiple airlocks for emergency evacuation.
• An airlock in the water line prevented the pump from working properly.
• The plumber bled the airlocks from the heating system.
• Modern space stations are equipped with redundant airlocks for safety.
• We had to bleed the airlocks out of the fuel line before starting the engine.