Where does this definition of blot one's copybook come from?
This entry for blot one's copybook is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is blot one's copybook a noun, verb, or something else?
In this entry, blot one's copybook is tagged as 2v..
What is Lughet?
Lughet is a free trilingual dictionary covering nearly five million entries across Uyghur, Chinese, and English, drawn from more than ten source dictionaries and corpora.