diamond

I

(New American Roget's College Thesaurus)

n. gem[stone], jewel, sparkler, ice (sl.); engagement ring; parallelogram, lozenge, rhomb[oid], rhombus; check. See ornament, angularity, goodness.

II

(Roget's IV) n.

1. [A crystalline Jewel]

Syn. (precious) stone, solitaire, engagement ring, brilliant, bort(s), diamond chips or flakes, crystal, ring, finger ring, rock*, sparkler*, glass*, ice*; see also Jewel 1 .

Grades, sizes, and forms of diamonds include: green, blue, blue-green, yellow, orange, canary, red, pink, brown, gray, smoky, black, rough, uncut, brilliant, double brilliant, half-brilliant, trap-brilliant, split-brilliant, old-mine, Kimberley, Brazilian, industrial, artificial; table, pear-shaped, marquise, baguette, emerald-cut, table-cut, flat-cut, square-cut, oval-cut; diamond of the first water, diamond of the second water, diamond of the third water; see also gem 1 , stone . Famous diamonds include: Jubilee, Cullinan, Orlof, Nassak, Pigott, Hope, Great Mogul, Shah of Persia, Florentine, Star of the South, Kohinoor, Mountain of Light, Star of Yakutia, Regent, Pitt, Pascha of Egypt.

2. [An instrument using a diamond]

Syn. cutter, glass cutter, diamond point; see tool 1 .

3. [Shape or figure]

Syn. lozenge, rhombus, rhomb, quadrilateral; see form 1 , solid .

4. [A baseball playing field, particularly the infield]

Syn. lot, ballpark, sandlot, orchard*, pasture*, inner works*; see also field 2 , park 1 .