v. 1. To reject input, often ungracefully. "NULs make System V's `lpr(1)' choke." "I tried building an EMACS binary to use X, but `cpp(1)' choked on all those `#define's." See barf, gag, vi. 2. [MIT] More generally, to fail at any endeavor, but with some flair or bravado; the popular definition is "to snatch defeat from the jaws of victory."