(transitive) To complete a form or questionnaire with requested information. / (intransitive) To have one's physique expand with maturity or with surplus weight.

(transitive) To make (something) completely full. / (intransitive) To fill the tank of a vehicle with fuel. / (intransitive) To become completely full.

A language exercise in which one or more words are replaced with a blank line and the reader is tasked with supplying a valid replacement.

To complete a single fill in the blank question. / (idiomatic, figuratively) To complete an interruption, ambiguity, or vagueness in understanding, perception, or context.

The waste produced by mountain top removal mining. So named because it is typically piled high in nearby valleys.

Having a layer of gold applied to the surface

simple past tense and past participle of fill out

(broadcasting) Music broadcast as an interlude between formally scheduled programming, or to fill in during an unscheduled interruption, in order to forestall listener abandonment of the station.

(idiomatic) Alternative form of fit the bill

(construction, horticulture, archaeology) Soil used for filling, that is, found within or contemporaneously placed within a cavity, or a supply of soil for use as fill.