The Collaborative International Dictionary of English v.0.48:

Chloral \Chlo"ral\, n. [Chlorine + alcohol.]
   1. (Chem.) A colorless oily liquid, CCl3.CHO, of a pungent
      odor and harsh taste, obtained by the action of chlorine
      upon ordinary or ethyl alcohol.
      [1913 Webster]

   2. (Med.) Chloral hydrate.
      [1913 Webster]