or /mhw>, n. [ After the poet Göthe. ] (Min.) A hydrous oxide of iron (HFeO2), occurring in prismatic crystals, also massive, with a fibrous, reniform, or stalactitic structure. The color varies from yellowish to blackish brown. [ 1913 Webster ]
n. (Miner.) an oxide of iron. Syn. -- gothite. [ WordNet 1.5 ]