keep one's eyes peeled

Từ điển WordNet v3.1 - WordNet Dictionary

verb

pay attention;
be watchful
- Keep your eyes peeled for any policemen
• Syn:
keep one's eyes skinned, keep one's eyes open
• Usage Domain:
colloquialism
• Hypernyms:
watch, look out, watch out
• Verb Frames:
- Somebody ----s
- Somebody ----s PP