definition of
fill up

[1] #1 fill up v. make full, also in a metaphorical sense; "fill a container"; "fill the child with pride". wn

[2] #2 fill up v. become full; "The pool slowly filled with water"; "The theater filled up slowly". wn

[3] #3 fill up v. fill or stop up; "Can you close the cracks with caulking?". wn

[4] #4 fill up v. eat until one is sated; "He filled up on turkey". wn