Truing definitions

Truing

1) Making aligned 2) Making exact 3) Setting straight or righting
Found on https://www.crosswordclues.com/clue/truing

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truing

(from the article `abrasive`) Nearly all grinding wheels must be finished after they have been baked or fired. In a process called truing, the wheels are cut to final size, and ...
Found on http://www.britannica.com/eb/a-z/t/85

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