megrongálviolin
The term "megrongálviolin" appears to be a neologism, likely a portmanteau word. It is not a recognized term in musicology, instrument making, or general vocabulary. The word's construction suggests a combination of "megrongál" and "violin." "Megrongál" is a Hungarian word meaning "to damage," "to break," or "to ruin." Therefore, "megrongálviolin" could be interpreted as a "damaged violin" or a "ruined violin."
In the context of musical instruments, a megrongálviolin would refer to a violin that is no longer
Alternatively, the term might be used metaphorically or humorously to describe a violin that is played poorly