retainer
US /rɪˈteɪ.nɚ/
UK /rɪˈteɪ.nɚ/

1.
anticipo, honorarios
a fee paid in advance to someone, especially a lawyer, to secure or keep their services when required
:
•
The company paid a large retainer to the law firm.
La empresa pagó un gran anticipo al bufete de abogados.
•
She works on a retainer basis for several clients.
Ella trabaja con un anticipo para varios clientes.
2.
retenedor, sujetador
a device that holds something in place
:
•
The dental retainer helps keep her teeth straight.
El retenedor dental ayuda a mantener sus dientes rectos.
•
Make sure the battery retainer is securely fastened.
Asegúrese de que el retenedor de la batería esté bien sujeto.
3.
sirviente, vasallo
a servant or dependent in a wealthy or noble household
:
•
The old lord still had a few loyal retainers.
El viejo señor todavía tenía algunos sirvientes leales.
•
She was a trusted retainer in the royal court.
Era una sirvienta de confianza en la corte real.