'Iron-gray' definitions:

Definition of 'iron-gray'

From: WordNet
adjective
Of the grey color of iron [syn: iron-grey, iron-gray]
noun
The color of freshly broken cast iron [syn: iron-grey, iron-gray]

Definition of 'Iron-gray'

From: GCIDE
  • Iron-gray \I"ron-gray`\, a. Of a gray color, somewhat resembling that of iron freshly broken. -- n. An iron-gray color; also, a horse of this color. [1913 Webster]