a small picture inserted within the bounds or a larger one
"The magazine cover featured a large photo of the band, with a smaller inset portrait of their lead singer in the bottom corner."
A smaller thing set into a larger thing, such as a small picture inside a larger one.
"She admired the delicate inset photograph of her grandfather hidden within the frame of her grandmother's wedding portrait."
set or place in
"The jeweler carefully inset a tiny diamond into the gold band to create an elegant ring."
To set in; infix or implant.
"The carpenter carefully inset a piece of rosewood into the hardwood floor to repair the worn spot."
The word "inset" comes from Middle English and Old English, originally meaning to set something in or to appoint someone. It is formed by combining the prefix "in-" with the verb "set.