fill

1 fill /ˈfɪl/ verb
fills; filled; filling
1 fill
/ˈfɪl/
verb
fills; filled; filling
Britannica Dictionary definition of FILL
1 
a  [+ object] : to make (something) full
◊ If something fills you or fills your heart with an emotion, it makes you feel that emotion very strongly.
b  [no object] : to become full
2 
[+ object] : to spread all through (an area, the air, etc.)
3 
[+ object] : to spend or use (time)
4 
: to make (someone) full with food and drink — usually + up
[+ object]
[no object]
5 
[+ object] : to place material inside of (a hole, crack, etc.) in order to repair a surface
— often used figuratively
6 
[+ object] : to do or provide what is needed for (something)
7 
[+ object]
a  : to perform the work of (an office, position, etc.)
b  : to hire a person for a job that has become available
8 
[+ object] : to provide the things that are asked for in (something, such as an order)

fill in

[phrasal verb]
1 
fill (something) in or fill in (something)
a  : to complete (a document) by providing necessary information
— sometimes used figuratively
b  : to provide (more information)
2 
fill (someone) in or fill in (someone) : to provide information to (someone)
3 
fill in : to take the place of (someone who is away for a time) — often + for — see also fill-in

fill out

[phrasal verb]
1 
: to increase in size : to become larger and heavier
2 
fill (something) out or fill out (something) chiefly US : to complete (something, such as a form) by providing necessary information

fill someone's shoes

: to take someone's place or position

fill the bill

— see 1bill
2 fill /ˈfɪl/ noun
2 fill
/ˈfɪl/
noun
Britannica Dictionary definition of FILL
[noncount]
1 
: a full amount : all that someone wants or needs
◊ If you have eaten/drunk your fill, you have eaten/drunk all that you want.
◊ If you have had your fill of something, you do not want to do or have any more of it.
2 
: material that is used to fill something