Also found in: Dictionary, Thesaurus.
1. To shape, position, or adjust something in order to make it exactly level, balanced, or square. A noun or pronoun can be used between "true" and "up." Whoever laid these floorboards didn't true them up right! We use a special tool to true up the wheel of the lathe.
2. In accounting, to create a financial entry that adjusts for the difference in an actual expenditure for something compared to the amount of money that had been estimated and subsequently budgeted for it. We'll need to true up the expense accounts before the end of the quarter. The accountant trued up several entries to reconcile discrepancies in our balance sheet.
true something up
to straighten something up; to put something into true plumb. Please true this doorframe up better before you hang the door. Can you true up this wall a little?