filler

noun
1
a substance used to fill holes, especially in walls before painting them
پرکننده, درزگیر
2
something that is not important but is used to complete something else because nothing better is available
پرکننده, مواد کم‌اهمیت برای پر کردن
The song was originally a filler on their first album.
see also stocking filler
3
a soft substance that is put into somebody's skin, especially their face, to change their appearance
فیلر, ژل تزریقی
Some doctors use lip fillers illegally on under-18s.
see also Botox™