abeam /əˈbiːm/adverb 2adjective 2preposition 1forms 2 adverb2 •On the beam; at a right angle to the centerline or keel of a vessel or aircraft; being at a bearing approximately 90° or 270° relative.We were heading S.S.W., and had a steady breeze abeam and a quiet sea. — 1881 •Alongside or abreast; opposite the center of the side of the ship or aircraft. adjective2 •Alongside or abreast; opposite the center of the side of the ship or aircraft.The island was directly abeam of us. •Beaming, shining (especially with reference to a person's face or eyes).[…] the hearts of the saints [will] be all attention and their faces all abeam for the consolation — 1876 preposition1 •Alongside.She came abeam the crippled ship. formsmore abeam · most abeam