the whole of the eye, including the part inside the head that cannot be seen
IDIOMS
eyeball to eyeball (with sb) very close to sb and looking at them, especially during an angry conversation, meeting, etc:
The protesters and police stood eyeball to eyeball. * an eyeball-to-eyeball confrontation
be up to your eyeballs in sth to have a lot of sth to deal with:
They're up to their eyeballs in work.
moreatDRUGv.
verb [VN] (informal) to look at sb/sth in a way that is very direct and not always polite or friendly:
They eyeballed each other across the room.
