Amyl

from WordNet (r) 3.0 (2006)

amyl
    n 1: a hydrocarbon radical that occurs in many organic compounds

from The Collaborative International Dictionary of English v.0.48

Amyl \Am"yl\, n. [L. amylum starch + -yl. Cf. {Amidin}.] (Chem.)
   A univalent hydrocarbon radical, {C5H11}, of the paraffine
   series found in amyl alcohol or fusel oil, etc.
   [1913 Webster]