1. Also,underway.(of a ship) no longer in port, at anchor, etc.; moving.
2. no longer at rest, stationary, etc.; in motion; traveling: We'll put our bags in the car and be under way.
3. proceeding; in progress: Plans are under way to sell the company.
Pronunciation: (un'dur-wā" for 1; un'dur-wā' for 2), [key]
1. occurring while under way: the underway activities on a cruise ship.
2. See under way (def. 1).
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.