abeamEnglishOxford Dictionary of Englishabeam /əˈbiːm / ▸ adverb on a line at right angles to a ship's or an aircraft's length: the lighthouse was abeam at noon. ▪ (abeam of) opposite the middle of (a ship or aircraft): she was lying almost abeam of us [as preposition] before I knew it, I was abeam the ship. – ORIGIN late 18th century: from a-2 (expressing general direction) + beam.