The Collaborative International Dictionary of English v.0.48:
bichrome \bichrome\ bicoloured \bicoloured\adj. 1. having two colors. Syn: bicolor, bicolour, bicolored. [WordNet 1.5]WordNet (r) 3.0 (2006):
bichrome adj 1: having two colors; "a bicolor flower"; "a bicolored postage stamp" [syn: bicolor, bicolour, bicolored, bicoloured, bichrome, dichromatic]