Where does “Matschbirne” come from?

Matschbirne (German) comes from German Birne, from Middle High German bire, from Old High German bira, from Vulgar Latin pira, from Latin pirum — a pear.

Matschbirne (German): bad mental condition because of lack of sleep, illness, etc

Definitions

bad mental condition because of lack of sleep, illness, etc

Ancestry of “Matschbirne”, step by step

Matschbirne traces back through two separate lines of ancestry.

via German Birne

Step	Language	Word	Meaning
1	German	Birne	pear; lightbulb; head, bonce, noggin
2	Middle High German	bire	—
3	Old High German	bira	pear
4	Vulgar Latin	pira	—
5	Latin	pirum	a pear

via German Matsch

Step	Language	Word	Meaning
1	German	Matsch	mud; slush
2	German	matschen	to splash or wallow in mud

Every word from Latin pirum →Every word from Vulgar Latin pira →Every word from Old High German bira →