servir
serve
serve
serve
+
-ir
verb suffix
Servir means to serve and can be thought of as serve0 + -ir1 (verb suffix1).
verb
  1. serve
    To provide a service or to be of use
    Este cuchillo sirve para cortar pan. // This knife serves to cut bread.
  2. serve
    To present and distribute food or drinks
    El camarero sirve la cena a las 8. // The waiter serves dinner at 8.