What is the use of pessicator?

It seems you're asking about a word that doesn't exist in standard English. It's likely a misspelling or a word from a specific dialect or niche vocabulary.

To help me understand what you're looking for, could you please provide more context?

For example:

* Where did you encounter this word? (A book, a conversation, online, etc.)

* What was the context of the word? (What was being discussed?)

* Did you hear or see any other related words?

With more information, I can better understand what you're asking and provide a helpful answer.