From Wiktionary, the free dictionary
From closet + -ful.
closetful (plural closetfuls or closetsful)
- As much as a closet can hold.
2008 March 30, Patty Dann, “How We Got From Grief to Pancakes”, in New York Times[1]:I had been spooked at the time, never imagining that at age 46 I would have a closetful of my dead husband’s clothes, and that it would seem right.