by an eyelash
成語所屬單字eyelash
by an eyelash — 慣用語
1. by a very small amount; only just; barely
1.慣用語
釋義
以毫釐之差（僅以極小的差距）
by a very small amount; only just; barely
例句
The runner lost the race by an eyelash, crossing the finish line just half a second behind the winner.
Our team won the debate by an eyelash, with the judges giving us one more point than the other side.