Sentence:  A gang member may receive a new identity by taking on a nickname, or <WSD>moniker</WSD>, which others in the gang world would recognize. <WSD>Monikers</WSD> affirm a youth's commitment to gang life and may become their sole identity, the only way they see thselves and the only name they go by. 
Meaning of the word marked with <WSD> tags:  A personal name or nickname; an informal label, often drawing attention to a particular attribute.