NOT BAT (OR WITHOUT BATTING) AN EYELID (OR N. AMER. EYE)


Meaning of NOT BAT (OR WITHOUT BATTING) AN EYELID (OR N. AMER. EYE) in English

not bat ( or without batting) an eyelid (or N. Amer. eye)

informal

show (or showing) no surprise or concern.

→ bat

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.