1. A brownish iron sulphide mineral (FeS) having weak magnetic properties
   - pyrrhotite, magnetic pyrites

Derived forms: pyrrhotines

Type of: mineral

• double-glaze
• double-humped
• double-hung window
• double-jointed
• double-magnum
• double-park
• double-prop
• double-propeller plane
• double-quick
• double-reed instrument
• double-space
• double-spaced
• double-spacing
• double-team
• double-tongued
• double-u
• doubled
• doubleheader
• doubler
• doubles
• doublespeak
• doublet
• doublethink
• doubleton
• doubletree