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Wiktionary
d-sharp minor

n. (context music English) a minor key with the notes D♯, E♯, F♯, G♯, A♯, B, C♯

Wikipedia
D-sharp minor

D-sharp minor or D minor is a minor scale based on D-sharp, consisting of the pitches D, E, F, G, A, B, and C. For the harmonic minor, C is used instead of C. Its key signature has six sharps.

E minor is its enharmonic equivalent. Its relative major is F major (or enharmonically G major), and its parallel major is D major, usually replaced by E major, since D major's two double-sharps make it impractical to use.

Changes needed for the melodic and harmonic versions of the scale are written in with accidentals as necessary.

D minor is infrequently used as the principal key center of pieces in the Classical era. More common is notation in E minor, which is a relatively manageable key for many brass instruments and woodwinds.