WordNet
n. (psychoanalysis) the second sexual and social stage of a child's development during which bowel control is learned [syn: anal phase]
Wikipedia
The anal stage is the second stage in Sigmund Freud’s theory of psychosexual development, lasting from age 18 months to three years. According to Freud, the anus is the primary erogenous zone and pleasure is derived from controlling bladder and bowel movement. The major conflict issue during this stage is toilet training. A fixation at this stage can result in a personality that is too rigid or one that is too disordered.
According to Freud’s theory, personality developed through a series of stages throughout childhood. These stages are focused on erogenous areas. Freud believed in the libido, which he referred to as psychosexual energy. To Freud, the libido was the driving force behind all of human behavior.
In order to obtain a healthy personality later on in adulthood all of these stages need to be completed successfully. If issues are not resolved in a stage then fixation will occur resulting in an unhealthy personality.