- (nautical, aircraft) Alongside or abreast; opposite the center of the side of the ship or aircraft. [Mid 19th century.]
"The island was directly abeam of us."
- (nautical, aircraft) On the beam; at a right angle to the centerline or keel of a vessel or aircraft; being at a bearing approximately 090 Degrees or 270 Degrees relative . [Mid 19th century.]
- (nautical) Alongside. [Mid 19th century.]
"She came abeam the crippled ship."