NOUN (1)

1. a plane figure that deviates from a square or circle due to elongation;


ADJECTIVE (2)

1. (of a leaf shape) having a somewhat elongated form with approximately parallel sides;

2. deviating from a square or circle or sphere by being elongated in one direction;

The Collaborative International Dictionary of English v.0.48:

Oblong \Ob"long\, a. [L. oblongus; ob (see Ob-) + longus long:
   cf. F. oblong.]
   Having greater length than breadth, esp. when rectangular.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Oblong \Ob"long\, n.
   A rectangular figure longer than it is broad; hence, any
   figure longer than it is broad.
   [1913 Webster]

         The best figure of a garden I esteem an oblong upon a
         descent.                                 --Sir W.
                                                  Temple.
   [1913 Webster]

U.S. Gazetteer (1990):

Oblong, IL (village, FIPS 55106)
  Location: 39.00222 N, 87.90845 W
  Population (1990): 1616 (794 housing units)
  Area: 2.4 sq km (land), 0.0 sq km (water)
  Zip code(s): 62449

Moby Thesaurus II by Grady Ward, 1.0:

24 Moby Thesaurus words for "oblong":
   cube-shaped, cubed, cubic, cubiform, cuboid, diced, elliptical,
   elongated, foursquare, oblongated, oblongitudinal, orthogonal,
   quadrangular, quadrate, quadriform, quadrilateral, rectangular,
   rhombic, rhomboid, square, tetragonal, tetrahedral, trapezohedral,
   trapezoid