(adverb, preposition)


1. on a ship, train, plane or other vehicle

2. on first or second or third base

- Their second homer with Bob Allison aboard

3. side by side

- anchored close aboard another ship

Similar word(s): alongside

4. part of a group

- Bill's been aboard for three years now

Sentences with aboard as an adverb:

- We all climbed aboard.

- To sling a saddle aboard.

- He doubled with two men aboard, scoring them both.

- The office manager welcomed him aboard.

- The ships came close aboard to pass messages.

- The captain laid his ship aboard the enemy's ship.


1. On board of; onto or into a ship, boat, train, plane. [First attested around 1350 to 1470.]

- We all went aboard the ship.

2. Onto a horse. [First attested in the mid 20th century.]

3. (obsolete) Across; athwart; alongside. [Attested from the early 16th century until the late 17th century.]