- to run, pass, or go under.
- Nautical. to pass beneath (a stretched rope, net, etc.) in a boat or the like for the purpose of inspection or repairs.
Origin of underrun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for underrunning
Later Van Depoele invented an underrunning trolley and pole, taking out the original patents.
In place of the underrunning trolley and pole, however, the current was taken from the overhead wire by means of a flexible cable.