infill noun 2verb 2forms 3 noun2 •That which fills in a space, hole or gap. •The redecoration of a fingernail or toenail after it has grown, to prevent an unsightly gap. verb2 •To fill in a space, hole or gap.Here the original drawing is shown in grey and the infilled tracing in black. The lettering can be further refined and, unlike ink-based artwork, can be rekerned without being redrawn. — 2011 •To rededicate land in an urban environment to new construction. formsinfilled · infilling · infills