Fuente de la expresión
Diccionario Bilingüe Oxford
Estructura completa
To sleep with one eye open
Variantes
to sleep with one[‘s] eye[s] [open, peeled]

Contexto
You may have heard the phrase “sleep with one eye open.” While it’s usually meant as a metaphor about protecting yourself, you may wonder if it’s actually possible to sleep with one eye open and one closed. In fact, there are a variety of medical conditions that may make it impossible to close your eyes when you sleep. Some of these may lead to sleeping with one eye open and one eye closed.
Fuente del contexto
Healthline
Tipo de fuente
newspaper
Autor
Erica Hersh
Título de la fuente
What Can Cause You to Sleep with One Eye Open and One Closed?
Año
2020
Web
https://www.healthline.com/health/sleeping-with-one-eye-open
Idioma
English
Nivel de uso
Estándar
Marca dialectal
General
Frecuencia
Frecuente