noun
: either of two isomeric liquid alcohols C 3 H 7 OH:
a. : the normal alcohol CH 3 CH 2 CH 2 OH occurring in fusel oil but usually obtained synthetically (as by oxidation of mixtures of propane and butane) that is used chiefly as a solvent (as in brake fluid compositions) and in organic synthesis; 1-propanol
b. : isopropyl alcohol