pyrolusite
noun
py·ro·lu·site ˌpī-rō-ˈlü-ˌsīt 
: a soft black or steel-gray mineral of metallic luster consisting of manganese dioxide that is the most important ore of manganese
Word History
Etymology
German Pyrolusit, from Greek pyr- + lousis washing, from louein to wash — more at lye
First Known Use
1828, in the meaning defined above
- sweetheart agreement
- sweetheart contract
- sweetheart deal
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- sweetheart neckline
- sweetheart rose
- sweethearts
- sweetie
- sweetie pie
- sweetie pies
- sweeties
- sweetiewives
- sweeting
- sweetings
- sweetish
- sweetisher
- sweetishest
- sweetishly
- sweetleaf
- sweetleaf family
- sweetleafs
- sweetleaves
- sweetless
- sweetlier
- sweetliest