To make or become straight or straighter.(verb-transitive)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "straighten" in a sentence
"Went down stairs for dinner around 9pm where we were waited upon by a Chateau waiter who was fully obsessive compulsive and actually came by to "straighten" my silver wear at one point and bullied us into all ordering the same beverage."
"Does it mean pick up as in "straighten" or pick up as in "yank up?""
"Similarly, despite the efforts of Scott and Paxton to "straighten" The Brick Foxhole, the homosocial and potentially homoerotic bonds between men represented by Brooks could not be completely excised from Crossfire."