[uh-bawrd, uh-bohrd] 
| 1. | on board; on, in, or into a ship, train, airplane, bus, etc.: to step aboard. |
| 2. | alongside; to the side. |
| 3. | Baseball. on base: a homer with two aboard. |
| 4. | into a group as a new member: The office manager welcomed him aboard. |
| 5. | on board of; on, in, or into: to come aboard a ship. |
| 6. | all aboard! (as a warning to passengers entering or planning to enter a train, bus, boat, etc., just before starting) Everyone get on! |
