The passage below comes from a book, Hidden Figures by Margot Lee Shetterly: -
A bright spot presented itself in the form of another man’s problem. A. Philip Randolph, the head of the largest black labor union in the country, demanded that Roosevelt open lucrative war jobs to Negro applicants, threatening in the summer of 1941 to bring one hundred thousand Negroes to the nation’s capital in protest if the president rebuffed his demand. “Who the hell is this guy Randolph?” fumed Joseph Rauh, the president’s aide. Roosevelt blinked.
I'd like to ask the meaning of 'blink' in this context.
In a dictionary I find two probable candidates, meaning #2 and #3, but I cannot narrow to one exact meaning between both.
(I am leaning to #3 meaning, to ignore, though.)
to be startled or dismayed (usu. fol. by at):
▪ She blinked at his outburst.
to look evasively or with indifference; ignore (often fol. by at):
▪ to blink at another's eccentricities.