quinceaños

Etymology
From.

Noun

 * 1) a Mexican girl’s 15th birthday party (becoming a woman)

Usage notes

 * This word has a singular meaning, but is treated grammatically both as a singular and as a plural:
 * 2000, Oscar Yanes, Pura Pantalla, page 214
 * : estaba invitado a los quinceaños de Carlota Elizabeth.
 * 1998, Homero Galarza Elizondo, La Estación, page 52
 * : para el quinceaños de su hija.