There are no common words in English that end in "can". If you are encountering a word that seems to end in "can", it's likely a mistake or a misspelling.
Here are some possible scenarios:
* Misspelling: You might have encountered a word that is spelled incorrectly, and "can" is part of a different suffix.
* Foreign language: The word might be borrowed from another language where "can" is a valid suffix.
* Technical jargon: In some specialized fields, words might be constructed with "can" as a suffix, but this is rare.
If you can provide the specific word you are thinking of, I can help you understand its meaning and etymology.