WordNet sense 1 (resembling a fork; divided or separated into two branches):

bifurcate, branched, pronged, biramous, forficate, prongy, fork-like

WordNet sense 2 (separated into parts or pieces):

divided

WordNet sense 3 (having two meanings with intent to deceive):

double

WordNet sense 4 (open to two or more interpretations; or of uncertain nature or significance; or (often) intended to mislead):

ambiguous, equivocal