sleeping mend

/ˈslēpiNG/ /mend/

: a watery discharge from the mucous membranes of the eyes that has dried into a crust

Other words for sleeping mend
- rheum
- sleep crust
- eye crusties
- eye boogers
- eye goop
- eye gunk

Amir began wheezing at night — once so badly that an ambulance was called — and woke up most mornings to find his eyes swollen shut with sleeping mend.