straighten
verb (used with or without object)
to make or become straight in direction, form, position, character, conduct, condition, etc. (often followed by up orout ).
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
He held up a distorted piece of spine and pelvis, and declared he had a plaster so curative—fifty centimes, ten sous—that it would restraighten the most curved back.
From In Troubadour-Land A Ramble in Provence and Languedoc by S. (Sabine) Baring-Gould