noun

• One who fills.
• Something added to fill a space or add weight or size.
• Any semisolid substance used to fill gaps, cracks or pores.
• (cosmetic surgery) A dermal filler, a substance injected beneath the skin to restore lost volume.
• A relatively inert ingredient added to modify physical characteristics; a bulking agent.
• A short article in a newspaper or magazine.
• A short piece of music or an announcement between radio or TV programmes.
• Any spoken sound or word used to fill gaps in speech; filled pause.
• Cut tobacco used to make up the body of a cigar.
• (programming) In COBOL, the description of an unnamed part of a record that contains no data relevant to a given context (normally capitalised when in a data division).
• (horticulture) A plant that lacks a distinctive shape and can fill inconvenient spaces around other plants in pots or gardens.
• (forestry, usually in the plural) Any standing tree or standard higher than the surrounding coppice in the form of forest known as "coppice under standards".
• (television, music) material of lower cost or quality that is used to fill a certain television time slot or physical medium, such as a music album
• A surname.