noun
: any of eight isomeric liquid alcohols C 5 H 11 OH used chiefly as solvents and in making esters: as
a. : the normal primary alcohol CH 3 (CH 2 ) 3 CH 2 OH that in vapor form is irritating to the eyes and respiratory tract and that is used in organic synthesis; 1-pentanol — called also amyl alcohol, n-amyl alcohol, n-pentyl alcohol
b. : isopentyl alcohol
c. : active amyl alcohol
d. : tertiary amyl alcohol