tunnel
noun
an underground passage.
Used to describe an action that will be fully completed or achieved by a specific point in the future.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
By late August, billions of cicada nymphs will have tunneled underground and started their incredible 17-year life cycle again.
From Washington Post ● Jul. 21, 2021