The Collaborative International Dictionary of English v.0.48:

Millrea \Mill"rea`\ (m[i^]l"r[=e]`), Millree \Mill"ree`\,
Millreis \Mill"reis`\ (m[i^]l"r[=e]s`), n.
   See Milreis.
   [1913 Webster] Millrind