Here are some suffixes that may be similar to what you're looking for:
* -ary: This suffix often indicates a place or thing associated with something. For example, "library" is a place for books, and "dictionary" is a book containing words.
* -ory: This suffix can also indicate a place or thing associated with something, but it's often used for a place where something is done. For example, "factory" is a place where things are made, and "laboratory" is a place for scientific experiments.
* -ery: This suffix often indicates a place or activity related to a particular trade or profession. For example, "bakery" is a place where bread is baked, and "fishery" is a place where fish are caught.
If you can provide the word you were thinking of, I can help you figure out what suffix it uses.