brillar
shine
brilliant
bright, shining
+
-ar
verb suffix
Brillar means to shine and can be thought of as brilliant0 (bright, shining0) + -ar1 (verb1).
verb
  1. shine
    To shine or glow with light
    Las estrellas brillan en el cielo nocturno. // The stars shine in the night sky.
  2. excel
    To stand out or excel in a particular field or activity
    Ella siempre brilla en sus presentaciones. // She always excels in her presentations.