eyes open
1. Careful watch or attention; readiness to see.
■ Usually used with "for".
Keep your eyes open for a boy in a red cap and sweater.
The hunter had his eyes open for rabbits.
They drove on with their eyes open for a gas station.
Synonym: EYE OUT, KEEP ONE'S EYES PEELED.
2. Full knowledge; especially of consequences; understanding of what will or might result.
■ Used with "have" or "with".
Automobile racing is dangerous. Bob went into it with his eyes open.
Betty had her eyes open when she got married.
Antonym: CLOSE ONE'S EYES.

[TahlilGaran] English Idioms Dictionary ▲