(railways) A rail designed so that the carriage wheels roll on its edges, being held there by flanges.

plural of edge rail

A mill for crushing or grinding in which stones roll around on their edges on a level circular bed.

plural of edge mill

Alternative form of bleeding edge.

(technology, idiomatic) Of or pertaining to something, such as technology, which is too new and untested to be reliable or to have any assurance of safety; (in a weakened sense) that represents the latest developments in something.

plural of bleed edge

Alternative form of bleed edge

plural of bleed-edge

(cartography) On maps, where some mapping extends beyond the neatline indicating detail which may be found on adjoining sheets. / (printing) An edge where bleed occurs.