Where does this definition of card index come from?
This entry for card index is sourced from GetWord Corpus, one of the dictionaries and corpora merged into Lughet.
Is card index a noun, verb, or something else?
In this entry, card index is tagged as 2n..
Does card index appear elsewhere on Lughet?
Yes — card index appears under other sources or language pairs in Lughet's collection. See the list below.
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.