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tunnel

noun

/ˈtʌnəl/

Meaning

an underground passage or shaft

They dug a tunnel under the river.

passage, shaft, corridor

open space, above ground

tunnel vision, tunnel construction, tunnel system

a sudden loud noise; a hard blow or hit

A vehicle, such as an airplane or helicopter, that can fly in the air.

The process of planning and exercising conscious control of time spent on specific activities to inc...

A range of investments held by a person or organization.

the belief in or practice of selfless concern for the well-being of others

A new area of activity, knowledge, or development; the edge of knowledge or achievement.