1) Bend into an arch 2) Bend like an arch 3) Curve into an arch 4) Form an arch 5) Form into an arch 6) Form into an arch or curve 7) Form into an arch, old-style Found on https://www.crosswordclues.com/clue/embow
Em·bow' transitive verb To bend like a bow; to curve. ' Embowed arches.' [ Obsolete or R.] Sir W. Scott. « With gilded horns embowed like the moon.» Spenser. Found on http://www.encyclo.co.uk/webster/E/26