quebrarse

v. break, rupture; leak

(v.) = snap off
Ex: The jet ultimately shot up fully vertically -- at which point the wings snapped off and the whole works careened down into the ocean.

= go + belly up, fold.
Ex: Our ISP (Internet Service Provider) went belly up 10 days ago and we have been unable to send & receive emails since.
Ex: By the mid-eighties, two of the big companies folded, but were replaced by a handful of small, independent firms = A mediados de los ochenta, dos de las grandes compañías quebraron, pero fueron sustituidas por un puñado de pequeñas empresas independientes.
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* hacer quebrar = bankrupt.
* no quebrar = stay in + business.
* quebrarse = snap off.