Definition - What does Little mean?
Little refers to a submissive person, usually a woman, who role plays a younger age. The little is the little girl or little boy in a daddy-dom BDSM role playing act. This person is dominated by a daddy. In rarer instances, the dominant person may be a mommy. The little dresses for the part. They also alter their voice to seem younger.
Kinkly explains Little
It is said that the daddy-dom and little girl dynamic presents a more relatable side of BDSM. The act is more about taking care of each partner's needs. The daddy gets to impose his masculinity positively onto his partner. The little, on the other hand, receives the attention and care that they crave. There might be some spanking involved if the little has been behaving badly.