doorstopper

n : a device that stops open doors from moving [syn: {doorstop}]

showstopper

A hardware or (especially) software {bug} that makes an

implementation effectively unusable; one that absolutely has

to be fixed before development can go on. Opposite in

connotation from its original theatrical use, which refers to

something stunningly ▫good▫.

[{Jargon File}]

(1995-01-31)