Noun
aligner (plural aligners)
One who, or that which, aligns.
These buttons would hook on to the rubber bands, which looped around a cut out in the top part of the aligner. Source: Internet
The Aligner Packing Robot can grade up to 80 frozen pieces per minute based on length,weight and quality with the utmost accuracy. Source: Internet
I’m halfway through an unusually long two-year program of Invisalign, the most popular brand of aligner. Source: Internet