When you wink at someone, you look toward them and close one eye very briefly, usually as a signal that something is a joke or a secret.
not get/have a ˈwink of sleepnot sleep a ˈwink
to not be able to sleep 没合一下眼；不能入睡
I didn’t get a wink of sleep last night.
我昨天一夜都没合眼。
I hardly slept a wink.
我几乎连个盹儿都没打。