Keep your ears open
Meaning
Be attentive and listen for useful information.
Usage
Encourages vigilance in gathering news, rumors, or opportunities.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
Metaphorical extension of 'ears' representing awareness.
Used in seafaring communities and oral storytelling to nudge people to observe and listen actively.