Where does this definition of letter bomb come from?
This entry for letter bomb is sourced from Main Dictionary, one of the dictionaries and corpora merged into Lughet.
Is letter bomb a noun, verb, or something else?
In this entry, letter bomb is tagged as noun.
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.