glycol

from WordNet (r) 3.0 (2006)

glycol
    n 1: a sweet but poisonous syrupy liquid used as an antifreeze
         and solvent [syn: {ethylene glycol}, {glycol},
         {ethanediol}]
    2: any of a class of alcohols having 2 hydroxyl groups in each
       molecule [syn: {diol}, {glycol}, {dihydric alcohol}]

from The Collaborative International Dictionary of English v.0.48

Glycol \Gly"col\, n. [Glycerin + -ol. See {Glycerin}.] (Chem.)
   (a) A thick, colorless liquid, {C2H4(OH)2}, of a sweetish
       taste, produced artificially from certain ethylene
       compounds. It is a diacid alcohol, intermediate between
       ordinary ethyl alcohol and glycerin.
       [1913 Webster]