not sleep a wink(to not sleep at all; to get a moment's sleep; enjoy a bit of sleep; sleep for even a very brief time, used in negative statements: I didn't/couldn't sleep a wink (=didn't / couldn't sleep at all) last night: I was so excited last night – I didn't sleep a wink; I didn't sleep a wink all night; I didn't get a wink of sleep on the planeTaras)
