See Also: crack-up(dictionary)
crack-up(dictionary)
crack-(dictionary)
crack(4)(dictionary)
crack(3)(dictionary)
crack(2)(dictionary)
crack(1)(dictionary)
toe-crack(medicine)
crack(medicine)
quarter-crack(medicine)

crack-up (iou)



crack-up noun. colloq. E20.
[from crack up s.v. CRACK verb.]
An instance of cracking up, a collapse under strain etc.; a nervous breakdown.