One of a group of colorless, volatile, heterocyclic organic compounds containing a ring of four carbon atoms and one oxygen atom, obtained from wood oils and used in the synthesis of furfural and other organic compounds. 呋喃无色、易挥发的杂环有机化合物的一种，含有一个由四个碳原子和一个氧原子构成的环，从桐油提炼出来，用于合成糠醛及其它有机化合物
