4bat verb
bats; batted; batting [+ obj] : to close and open (your eyes or eyelashes) very quickly several times especially as a way of flirting
▪ She smiled and batted her eyelashes at him.
▪ She smiled and batted her eyelashes at him.
not bat an eye/eyelash (US) or Brit not bat an eyelid
informal : to show no surprise, fear, concern, etc.
▪ He thought the news would make her upset, but she never batted an eye. [=she did not appear to be upset at all] ▪ He listened without batting an eyelash.
▪ He thought the news would make her upset, but she never batted an eye. [=she did not appear to be upset at all] ▪ He listened without batting an eyelash.
— compare 2bat
