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v. a·ligned, a·lign·ing, a·ligns
1. To arrange in a line or so as to be parallel: align the tops of a row of pictures; aligned the car with the curb.
2. To adjust (parts of a mechanism, for example) to produce a proper relationship or orientation: aligning the wheels of a truck.
3. To ally (oneself, for example) with one side of an argument or cause: aligned themselves with the free traders.
1. To adhere to a prescribed course of action.
2. To move or be adjusted into proper relationship or orientation.
[French aligner, from Old French : a-, to (from Latin ad-; see ad-) + ligne, line (from Latin līnea; see line1).]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
an official who ensures boats are aligned correctly before the start of a race
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014