Origin: Germanic Old English prefix
Overhang has 5 different meanings across 2 categories:
projection that extends beyond or hangs over something else
The volume that tips the balance between the demand and the supply toward demand lagging supply.
project over
To hang over (something).
Overhang comes from Old English oferhangan, which combines the prefix ofer- (meaning "over") with the verb hang. The original meaning was simply to hang over something.