Three-legged is a word used to describe something that has three legs or supporting structures. Synonyms for this word are tripod, tripedal, and trilateral. The word tripod is typically used to describe a stand or support that has three legs, such as the one used for cameras or telescopes. Tripedal is used to describe animals or creatures that have three legs, such as certain lizards or insects. Trilateral is a more general term that can be used to describe any object or structure that has three sides or angles. Overall, these synonyms can help to broaden one's vocabulary and provide more descriptive language when discussing objects or creatures with three supporting structures.