Fill/fɪl/ Definition 1 of 5Pro Tip 1/3Measurement Implied Using 'fill' suggests an amount that exactly fits within a container or space. I always fill my coffee cup to the top. Pro Tip 2/3Completeness 'Fill' conveys a sense of completeness, with no extra room left. She filled her plate with vegetables, with no space for more food. Pro Tip 3/3Visual Impact Used to create a mental image of a space being fully used or occupied. The artist filled the canvas with vibrant colors.