eyeball
n. countablen. the whole round part of your eye. In casual talk, people also use this word to mean the number of people watching a video or looking at a website.
n. the entire ball-shaped part of the eye, including the parts hidden by the socket. In informal or marketing contexts, it refers to a person viewing a specific piece of media or advertisement.
The doctor checked my eyeball for any signs of redness.
The marketing team is focused on getting more eyeballs on their new social media campaign this month.
While the anatomical structure of the eyeball is remarkably complex, the digital economy treats it as a simple unit of attention to be bought and sold by advertisers.
From eye + ball. Compare Middle English balle off the eye, balle of þe eyȝe (“eyeball”, literally “ball of the eye”).
Often used in the plural ('eyeballs') when referring to an audience or web traffic in a business context.