fill-in

[ fil-in ]
/ ˈfɪlˌɪn /

noun

a person or thing that fills in, as a substitute, replacement, or insertion: The company used a fill-in for workers on vacation.
a brief, informative summary; a rundown.

Origin of fill-in

First recorded in 1915–20; noun use of verb phrase fill in

Example sentences from the Web for fill-in