A four letter word meaning the foundation of something is base.
The four letter word for repairing something is mend.
a Seat
have
room
slit
open
doorway
A four letter word meaning the foundation of something is base.
wide
The four letter word for repairing something is mend.
PORE
have
Mend
omen
a Seat
A four letter word for something a violinist needs could be Bows.