1 example sentence using fill-in.
Fill-in used in a sentence
Fill-in in a sentence as a noun
Unfortunately, the DSM-V turns this on its head, by allowing "fill-in-the-blank" intoxication disorders. Think of generic classes in Java - they work the same way.
Fill-in definitions
noun
someone who takes the place of another (as when things get dangerous or difficult); "the star had a stand-in for dangerous scenes"; "we need extra employees for summer fill-ins"
See also: stand-in substitute relief reliever backup