1. A statement, phrase, or utterance that can be interpreted in more than one way, creating uncertainty about the intended meaning
The sentence 'I saw the man with the telescope' is an ambiguous expression because it's unclear who has the telescope.
A frase 'Vi o homem com o telescópio' é uma expressão ambígua porque não fica claro quem tem o telescópio.
2. In linguistics or logic, language that lacks clarity due to multiple possible interpretations
The contract contained several ambiguous expressions that led to legal disputes.
O contrato continha várias expressões ambíguas que levaram a disputas legais.