a younger sibling / a cousin who is descended from an ancestor who is/was a younger sibling to oneself's or one's spouse's (such as a child of a younger sibling of one of one's parents or a grandchild of a younger sibling of one of one's grandparents) / a person younger than oneself but of the same generation / a child or a student

pronoun used to refer to any person (oneself, the addressee, or any third person) described by the noun em above; (familiar) pronoun used to refer to younger person of the same generation

small; smaller

brother-in-law (younger brother of wife) / sister-in-law (younger sister of wife)

sister-in-law (wife of younger brother)

baby

sisters

younger sister

younger brother

MC (master of ceremony), host