utilidor
/ˈjutəlɪdɔr/
noun
- An underground passage or tunnel that carries utility pipes and cables (such as water, electricity, or steam) to protect them from weather or freezing.
- The workers entered the utilidor to repair the electrical cables.
- The university's campus uses a utilidor system to distribute steam for heating.
- In cold climates, buildings are often connected by a utilidor to keep water pipes from freezing.