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fill–in

2 ENTRIES FOUND:
fill–in /ˈfɪlˌɪn/ noun
plural fill–ins
fill–in
/ˈfɪlˌɪn/
noun
plural fill–ins
Britannica Dictionary definition of FILL–IN
[count]
: someone who takes the place of another person who is away for a short time : someone who fills in for someone else