This is the 8767th most frequent Spanish word.
sterling
The Spanish word "sterling" does not exist; it is English, meaning "of high quality" or referring to British currency.
Here, 'esterlina' refers to 'sterling silver', denoting its usage as a material quality associated with high standard.
El joyero tiene una colección de joyas de plata esterlina.
The jeweler has a collection of sterling silver jewelry.
In this context, 'esterlino' means 'excellent' or 'of outstanding quality,' used metaphorically.
El equipo realizó un esfuerzo esterlino para ganar el campeonato.
The team made a sterling effort to win the championship.
Here, 'esterlinas' describes 'pounds sterling,' which is the currency of the United Kingdom.