Win (something) by a hair verb phrase
To succeed in something by only a small amount
It was a very thrilling race. My horse won by a hair only.
Peter lost by 1 point to John in the last round. As a result, John won the competition by a hair.
To be extremely successful and admired by a range of people.
To fall suddenly and heavily to the ground
To narrowly succeed or defeat someone in something
One has the potential for being successful in the future ahead.
If you say that you carry all before you, you mean that you successfully defeat all of your opponents in a battle or a competition.
The verb "win" should be conjugated according to its tense.
To say the same thing repeatedly
Ok, I get it! You sound like a broken record, seriously!