The Collaborative International Dictionary
quarteron
Quadroon \Quad*roon"\, n. [F. quarteron, or Sp. cuarteron. See Quarter a fourth part, and cf. Quarteron.] The offspring of a mulatto and a white person; a person quarter-blooded. [Written also quarteron, quarteroon, and quateron.]
Wiktionary
quarteron
n. 1 (obsolete form of quadroon English) 2 (context obsolete English) A quarter; especially, a quarter of a pound, or a quarter of a hundred.