A female toad is called a toad. Unlike some animals where males and females have distinct names, both male and female toads are simply referred to as toads. However, during the breeding season, you might hear terms like female toad or male toad to specify their gender, especially when discussing their roles in reproduction.
In general, the term toad is used for both genders, and there is no unique name for a female toad. This is common in many species where the primary distinction is made only when necessary, such as during mating or scientific studies.