'fill up' definitions:

Definition of 'fill up'

From: WordNet
verb
Make full, also in a metaphorical sense; "fill a container"; "fill the child with pride" [syn: fill, fill up, make full] [ant: empty]
verb
Become full; "The pool slowly filled with water"; "The theater filled up slowly" [syn: fill, fill up] [ant: discharge, empty]
verb
Fill or stop up; "Can you close the cracks with caulking?" [syn: close, fill up]
verb
Eat until one is sated; "He filled up on turkey" [syn: fill up, fill]