An individual who cross-dresses; e.g. a man who wears clothes traditionally associated and worn by women.
The word can be potentially problematic when transvestitism is conflated and confused with being transgender, or when the traditional psychological context is applied to all people who cross-dress. As such, it’s recommended to use the term with caution. Certainly do not refer to transgender or nonbinary individuals as transvestites, but also do not assume people who do call themselves transvestites are transgender or nonbinary – typically, they identify as cisgender.
People engage in cross-dressing for a variety of reasons, such as for fun or relaxation, for theatrical reasons, or as a form of gender exploration. This may or may not take the form of drag.