Something that completes another
Something added to another for embellishment or completion
To supply what is lacking
That which completes
That which completes the number of something
Each of his twenty-four topics has its complement of stories.
When painting the kitchen cabinets, Anna picked a color that would complement her floors.
On Friday morning Bird Song's full complement of guests were treated to the usual bounty of Cynthia's baking, but with less zip and smiles than most days.
A great relationship is found when two people complement, not complete, each other.
I would like to ask everyone to raise their glass in a toast to my sister and her new husband, Sarah and Connor; a pair who complement each other perfectly.