Leeches are small, slimy creatures that are often associated with blood-sucking and medical treatments. However, there are many other ways to refer to these wriggly creatures. Some synonyms for "leeches" include bloodsuckers, hirudineans, annelids, and parasitic worms. In certain situations, they may also be called medicinal leeches, which are used in certain medical procedures to help prevent blood clots or promote healing. Other synonyms for leeches might depend on the context in which they're used - for example, if you're describing someone who is constantly taking advantage of others, you might say they are "leech-like" in their behavior. No matter how you refer to them, leeches are fascinating creatures that have captured the imagination of scientists and laypeople alike for centuries.