Merriam-Webster Collegiate Dictionary - edge

 I. noun  Etymology: Middle English egge, from Old English ecg; akin to Latin acer sharp, Greek akme point  Date: before 12th century  1.  a. the cutting side of a blade a razor's ~  b. the sharpness of a blade a knife with no ~  c.  (1) force, effectiveness blunted the ~ of the legislation  (2) vigor or energy especially of body maintains his hard ~  d.  (1) incisive or penetrating quality writing with a satirical ~  (2) a noticeably harsh or sharp quality her voice had an ~ to it  (3) a secondary but distinct quality rock music with a bluesy ~  e. keenness or intensity of desire or enjoyment lost my competitive ~ took the ~ off our appetites  2.  a. the line where an object or area begins or ends ; border on the ~ of a plain  b. the narrow part adjacent to a border the ~ of the deck  c.  (1) a point near the beginning or the end; especially brink, verge on the ~ of disaster  (2) the threshold of danger or ruin living on the ~  d. a favorable margin ; advantage has an ~ on the competition  3. a line or line segment that is the intersection of two plane faces (as of a pyramid) or of two planes  • ~less adjective  II. verb  (~d; edging)  Date: 14th century  transitive verb  1.  a. to give an ~ to  b. to be on an ~ of trees edging the lake  2. to move or force gradually ~d him off the road  3. to incline (a ski) sideways so that one ~ cuts into the snow  4. to defeat by a small margin — often used with out ~d out her opponent  intransitive verb to advance by short moves