Translation::: It went into smoke. / It ended in smoke.
Meaning::: It failed. / It was not realised/achieved.
e.g.: One of our greatest poets and liberal revolutionaries, Petőfi Sándor, has a poem named ‘Füstbe ment terv‘, which means ‘The plan that failed’
füst – smoke
menni – to go
terv – plan
1) to plan; to intend; to consider doing
2) to design
Petőfi Sándor Was a Hungarian poet and liberal revolutionary. He is considered Hungary’s national poet, and was one of the key figures of the Hungarian Revolution of 1848. He is the author of the Nemzeti dal (National Poem), which is said to have inspired the revolution in the Kingdom of Hungary that grew into a war for independence from the Austrian Empire. It is most likely that he died in the Battle of Segesvár, one of the last battles of the war. ~ wiki