The word "bicephalous" refers to something that has two heads or is two-headed. There are several synonyms that can be used to describe the same thing. For example, the word "dual-headed" is a common synonym for bicephalous. Other synonyms include "two-headed," "double-headed," "twice-headed," and "twin-headed." All of these words can be used to describe animals, mythical creatures, or even objects that have two distinct heads or structures. While the use of bicephalous may be less common in everyday language, these synonyms provide an easy way to convey the same meaning in a variety of contexts.