no obj.
1- close and open one eye quickly, typically to indicate that something is a joke or a secret or as a signal of affection or greeting眨眼; 眨眼示意（尤用来表示说笑、讳言或作为传情、打招呼的示意）：
he winked at Nicole as he passed.
当他经过时, 他对尼科尔眨了眨眼。
1.1
wink at
pretend not to notice (something bad or illegal)假装没注意（坏事, 非法行为）：the authorities winked at their illegal trade.
当局对他们的非法贸易视而不见。
1.2
- (of a bright object or a light) shine or flash intermittently（明亮物体, 灯光）闪烁; 明灭。
- an act of closing and opening one eye quickly, typically as a signal眨眼; 眨眼示意：
Barney gave him a knowing wink.
巴尼会意地向他眨了眨眼。
短语
as easy as winking
- informal very easy or easily〈非正式〉很容易, 易如反掌。
in the wink of an eye（或in a wink）
- very quickly很快地, 转瞬间, 眨眼间。
not sleep（或get）a wink（或not get a wink of sleep）
- not sleep at all一点没睡, 没合一下眼。
词源
Old English wincian 'close the eyes'， of Germanic origin; related to German winken 'to wave'， also to WINCE1.