celly /ˈsɛli/ noun4 •(slang) A cellular phone.You got no hand skills, there's no security to save ya / No pager, no celly, no drop top Benz-y — 1998 •(slang) A cellmate. •(Canada, slang) Diminutive of celebration (of a goal). •(slang) A jail cell.So tragic, need a hot meal in my baby’s belly / Reminisce no hard times in my pen, in my celly, / I ain’t tryna go back, cause backwards ain’t part of my PJ — 2000 formscellies · cellys