Here are some possible scenarios:
* Typo: Perhaps you meant a word like "tranquilizers," "tranquilments," or "tremblements."
* Made-up word: Someone may have invented this word for a specific purpose, like in a story or game.
* Slang: It's possible that "tranklements" is a slang term used in a specific community or context.
If you can provide more context about where you encountered this word, I might be able to give you a more accurate answer.