edge control

== English == === Etymology === From edge +‎ control. === Noun === edge control (uncountable) (cosmetics) A hair product formulated to hold down baby or fine hair. (skating, skiing, snowboarding) The controlled use and placement of the edge of a skate, ski, or snowboard. (kayaking) A skill in edging; the ability to maintain one gunwale higher than the other at a controlled angle. (aviation) The management and manipulation of the edges of an aircraft's wings or control surfaces to enhance performance and stability. (design) Control over the exact placement of edges on a line or shape one is mapping, cutting, or etching. (law enforcement) The management of an unpredictable situation in order to prevent it from becoming physically dangerous. ==== Usage notes ==== In the context of aviation, the term edge control is usually qualified by the name of the edge being manipulated, as in leading-edge control or trailing-edge control.