eyeball

eyeball to eyeball face to face with someone, especially in an aggressive way.

eyeballs out with maximum physical effort. informal

give someone the hairy eyeball stare at someone in a disapproving or angry way, especially with your eyelids partially lowered. North American informal

1992Guy VanderhaegheThings As They Are The commissioner giving him the hairy eyeball all through the service didn't do anything for Reg's increasing bad humour either.

up to the (or your) eyeballs used to emphasize the extreme degree of an undesirable situation or condition. informal

2000Time Consumers are up to their eyeballs in debt, and the strain shows.