This is the 2075th most frequent German word.
teuren
"Teuren" is the conjugated form of "teuer," meaning "expensive" or "costly" in English.
Here, 'teuren' is an attributive adjective describing 'Schmuck' in the accusative singular masculine, reflecting its high value.
Ich kaufe den teuren Schmuck.
I buy the expensive jewelry.
In this sentence, 'teuren' modifies 'Restaurants' (plural) in dative case, indicating a descriptive quality of the places.
Wir besuchen das teuren Restaurants.
We visit the expensive restaurants.
The word 'teuren' is used attributively for the plural noun 'Bücher' in nominative case, highlighting their costly nature.