Source : Webster's Revised Unabridged Dictionary (1913)

Amyl alcohol \Am"yl al"co*hol\ (Org. Chem.)
   Any of eight isomeric liquid compounds, {C5H11OH};
   ordinarily, a mixture of two of these forming a colorless
   liquid with a peculiar cough-exciting odor and burning taste,
   the chief constituent of fusel oil. It is used as a source of
   amyl compounds, such as amyl acetate, amyl nitrite, etc.

Source : WordNet®

amyl alcohol
     n : a mixture of 2 or more isomeric alcohols; used as a solvent
         and in organic synthesis