Source : Webster's Revised Unabridged Dictionary (1913)

Crease \Crease\, n. (Lacrosse)
   The combination of four lines forming a rectangle inclosing
   either goal, or the inclosed space itself, within which no
   attacking player is allowed unless the ball is there; --
   called also {goal crease}.

Crease \Crease\ (kr[=e]s), n.
   See {Creese}. --Tennyson.

Crease \Crease\, n. [Cf. LG. krus, G. krause, crispness,
   krausen, kr[aum]usen, to crisp, curl, lay on folds; or perh.
   of Celtic origin; cf. Armor. kriz a wrinkle, crease, kriza to
   wrinkle, fold, W. crych a wrinkle, crychu to rumple, ripple,
   crease.]
   1. A line or mark made by folding or doubling any pliable
      substance; hence, a similar mark, however produced.

   2. (Cricket) One of the lines serving to define the limits of
      the bowler and the striker.

   {Bowling crease} (Cricket), a line extending three feet four
      inches on each side of the central strings at right angles
      to the line between the wickets.

   {Return crease} (Cricket), a short line at each end of the
      bowling crease and at right angles to it, extending toward
      the bowler.

   {Popping crease} (Cricket),, a line drawn in front of the
      wicket, four feet distant from it, parallel to the bowling
      crease and at least as long as the latter. --J. H. Walsh
      (Encyc. of Rural Sports).

Crease \Crease\, v. t. [imp. & p. p. {Creased} (kr?st); p. pr. &
   vb. n. {Creasing}.]
   To make a crease or mark in, as by folding or doubling.

         Creased, like dog's ears in a folio.     --Gray.

Source : WordNet®

crease
     n 1: an angular or rounded shape made by folding; "a fold in the
          napkin"; "a crease in his trousers"; "a plication on her
          blouse"; "a flexure of the colon"; "a bend of his elbow"
          [syn: {fold}, {plication}, {flexure}, {crimp}, {bend}]
     2: a slight depression in the smoothness of a surface; "his
        face has many lines"; "ironing gets rid of most wrinkles"
        [syn: {wrinkle}, {furrow}, {crinkle}, {seam}, {line}]
     3: a Malayan dagger with a wavy blade [syn: {kris}, {creese}]

crease
     v 1: make wrinkles or creases into a smooth surface; "The dress
          got wrinkled" [syn: {wrinkle}, {ruckle}, {crinkle}, {scrunch},
           {scrunch up}, {crisp}]
     2: make wrinkled or creased; "furrow one's brow" [syn: {furrow},
         {wrinkle}]
     3: scrape gently; "graze the skin" [syn: {graze}, {rake}]
     4: become wrinkled or crumpled or creased; "This fabric won't
        wrinkle" [syn: {rumple}, {crumple}, {wrinkle}, {crinkle}]