a quantity sufficient to satisfy
"he ate his fill of potatoes"
"she had heard her fill of gossip"
A sufficient or more than sufficient amount.
"The old carriage had snapped off both its fill, leaving the driver unable to steer down the steep hill."
One of the thills or shafts of a carriage.
In plain English: A fill is an amount of something that fills up a space completely.
"The bottle was full to the fill, so I couldn't add any more water."
Usage: As a noun, fill refers to the wooden shafts that connect a horse's harness to the carriage wheels. Do not confuse this technical term with the verb meaning to make something full.
appoint someone to (a position or a job)
"After years of volunteering, she was finally filled in as the new director of the charity."
To occupy fully, to take up all of.
"The crowd packed so tightly into the arena that there wasn't a single empty seat left to fill."
In plain English: To fill means to make something full by putting more stuff inside it until there is no empty space left.
"Please fill up your water bottle before we leave."
Usage: Use "fill" when something becomes completely occupied by a substance or people, such as filling a glass with water. It describes the action of making a space full so that nothing else can fit inside.
A surname, from given names.
"The Fill family has lived on that corner for generations, and everyone knows their name comes directly from an ancestor named Fillip."
The word "fill" comes from Old English fyllan, which meant to replenish or satisfy. It traveled into Middle English as fillen and has retained its original sense of making something full ever since.