guaiacol

noun
guai·​a·​col | \ ˈg(w)ī-ə-ˌkȯl How to pronounce guaiacol (audio) , -ˌkōl How to pronounce guaiacol (audio) \

Medical Definition of guaiacol

: a fragrant liquid or solid compound C7H8O2 obtained by distilling guaiacum or from wood-tar creosote or made synthetically and used chiefly as an expectorant and as a local anesthetic