1shut and open the eyes quickly:she blinked, momentarily blinded [with object]:he blinked his eyes nervously
[with object] (blink back) try to control or prevent (tears) by shutting and opening the eyes quickly:Elizabeth blinked back tears
(blink at) [usually with negative] react to (something) with surprise or disapproval:he doesn’t blink at the unsavory aspects of his subject
back down from a confrontation:the government blinked in the face of a coordinated public sector strike
2(of a light or light source) shine intermittently or unsteadily:the icon for his e-mail was blinking
1an act of shutting and opening the eyes quickly:he was observing her every blink
a moment’s hesitation:Thompson would have given her all this without a blink
2a momentary gleam of light.
not blink an eye
show no reaction.
in the blink of an eye (or in a blink)
informal very quickly.
on the blink
informal (of a machine) not working properly; out of order:the computer’s on the blink
Middle English: from blenk, Scots variant of blench1, reinforced by Middle Dutch blinken 'to shine'. Early senses included 'deceive', 'flinch' (compare with blench1), also 'open the eyes after sleep': hence sense 1 (mid 16th century)