- [countable, usually plural]
a small hole in a surface, often one of a series of small holes 齿孔 - [uncountable] (
medical )医学 the process of splitting or tearing in such a way that a hole is left 穿孔;穿通
Word Originlate Middle English: from medieval Latin perforatio(n-), from the verb perforare, from per- ‘through’ + forare ‘pierce’.