* It's a misspelling: You might have misheard or mistyped a similar-sounding word.
* It's a slang term: It could be a slang word specific to a certain region or group.
* It's a foreign word: "Palchin" could be a word from another language.
Could you provide more context?
* Where did you encounter this word?
* What was the situation?
* Did you hear it spoken or see it written?
Knowing more about the context would help me understand what "Palchin" might mean.