The action of creating or using a goaf in a coal mining operation; an instance of this.
Late 19th century (in an earlier sense). From goaf + -ing, in sense 1 probably influenced by gobbin.
英汉双解词典包含464360条英汉词条，基本涵盖了全部常用单词的翻译及用法，是英语学习的有利工具。