What does finstallum mean in Latin?

finstallum, a noun, means “A stall to contain a woodpile, especially as used in saltworks”.

What is the genitive of finstallum?

The genitive singular is finstallī. finstallum is neuter, second declension.

noun · neutersecond declension

finstallum n (genitive finstallī)

EnglandMedieval LatinneuterA stall to contain a woodpile, especially as used in saltworks

From Middle English fin and Middle English stal; or, related to finare + stallum / stallus.