diamond meaning, diamond definition | English Cobuild dictionary

Collins

diamond

  

      n  
1   
a    a colourless exceptionally hard mineral (but often tinted yellow, orange, blue, brown, or black by impurities), found in certain igneous rocks (esp. the kimberlites of South Africa). It is used as a gemstone, as an abrasive, and on the working edges of cutting tools. Composition: carbon. Formula: C. Crystal structure: cubic  
b    (as modifier)  
a diamond ring         Related adj       diamantine  
2      (Geometry)  
a    a figure having four sides of equal length forming two acute angles and two obtuse angles; rhombus  
b    modifier   rhombic  
3   
a    a red lozenge-shaped symbol on a playing card  
b    a card with one or more of these symbols or (when pl) the suit of cards so marked  
4      (Baseball)  
a    the whole playing field  
b    the square formed by the four bases  
5    (formerly) a size of printer's type approximately equal to 4½ point  
6    black diamond      a figurative name for       coal  
7    rough diamond  
a    an unpolished diamond  
b    a person of fine character who lacks refinement and polish  
      vb  
8    tr   to decorate with or as with diamonds  
     (C13: from Old French diamant, from Medieval Latin diamas, modification of Latin adamas the hardest iron or steel, diamond; see adamant)  
  diamond-like      adj  


black diamond  
      n  
1       another name for       carbonado   2  
2    usually pl      a figurative expression for       coal  
diamond anniversary  
      n   a 60th, or occasionally 75th, anniversary  
diamond bird  
      n   any small insectivorous Australian songbird of the genus Pardalotus, having a diamond-patterned plumage,   (Also called)    pardalote  
diamond jubilee  
      n   the celebration of a 60th, or occasionally 75th, anniversary  
diamond point  
      n   a diamond-tipped engraving tool  
diamond snake  
      n   a python, Morelia argus, of Australia and New Guinea, with yellow diamond-shaped markings  
diamond wedding  
      n   the 60th, or occasionally the 75th, anniversary of a marriage  
diamond willow  
      n     (Canadian)   wood that may come from any species of willow and has a diamond pattern in the grain, used for making walking sticks, table lamps, etc.  
false diamond  
      n   any of a number of semiprecious stones that resemble diamond, such as zircon and white topaz  
industrial diamond  
      n   a small often synthetic diamond, valueless as a gemstone, used in cutting tools, abrasives, etc.  
rough diamond  
      n  
1    an unpolished diamond  
2    an intrinsically trustworthy or good person with uncouth manners or dress  
English Collins Dictionary - English Definition & Thesaurus  
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"Collins English Dictionary 5th Edition first published in 2000 © HarperCollins Publishers 1979, 1986, 1991, 1994, 1998, 2000 and Collins A-Z Thesaurus 1st edition first published in 1995 © HarperCollins Publishers 1995"