1. To have removed crookedness, bends, curves, etc.: "Over the summer, Fred noticed the mountain road had been straightened and it was safer for driving."

"It was not until after Bill straightened his back, that he realized how hunched over his desk he had become."

2. To have corrected or provided accurate information: "During Sara's rebuttal of the arguments presented by the opposition, the lawyer straightened out the facts of the case with the judge."

Not having enough money or having less money than before: "After the bankruptcy, the corporation was in straitened circumstances."

"The family now lives in straitened conditions since the father lost his job."