She was a 'loser' in the first round of the tournament. [=she lost in the first round of the tournament]
Whoever benefits from the new government programs, the real 'loser' will be the American taxpayer.
He's a 'bad/poor loser'. = ('US') He's a 'sore loser'. [=he becomes upset or angry when he loses]
(..) Thought I might try for my high school equivalency. Hear you helped a couple of fellas with that. I don't waste time with losers, Tommy. I ain't no goddamn loser. -You mean that? -Yeah. You really mean that? Yes, sir, I do. Good. Because if we do this... (..)1994 The Shawshank Redemption