What does ambiguity mean?
The definition of ambiguity
Am`bi*gu”i*ty, n.; pl. Ambiguities.
Etym: [L. ambiguitas, fr. ambiguus: cf. F. ambiguité.]

The quality or state of being ambiguous; doubtfulness or uncertainty, particularly as to the signification of language, arising from its admitting of more than one meaning; an equivocal word or expression. No shadow of ambiguity can rest upon the course to be pursued. I. Taylor. The words are of single signification, without any ambiguity. South.