1. fill an empty space, occupy empty areas, fill a gap in knowledge or a physical gap
fill the void with, help fill the void
To ‘fill the void’ means to add what is required in order to fulfill a need or make something whole or complete. A ‘void’ is a gap or empty space. A ‘void’ often refers to an emotional ‘hole’ such as the ‘void in your life’ left after a relationship breaks up or someone dies. Someone might refer to a ‘void’ in their childhood if one of their parents wasn’t present. Similar in meaning to ‘fill the gap’.