Stücken
Stücken is the dative plural form of the German noun Stück. The base word Stück means a piece, a portion, or a work such as a musical composition or a theater piece. The standard nominative and accusative plural is Stücke; Stücken is used specifically in the dative plural when the noun is declined in that case.
In practice, Stücken appears in sentences after prepositions or verbs that require the dative: for example,
The noun Stück has several senses in German. It can refer to a physical piece or slice
In summary, Stücken is not a separate meaning of its own but the grammatical dative plural form