Shaved Head, Close-Cropped Hair
A monk who is at master status is probably a priest by now... though not just any priest, this refers to a Buddhist priest. In modern Japanese this has also come to mean a shaved head or close-cropped hair. You can probably guess why!
The 坊 reads like you'd expect. Unfortunately 主 is an exception and read ず. Just think of a zoo that holds Buddhist priests in captivity. How sad for those Buddhist priests.
Before becoming a Buddhist priest, I shaved my head.
Tomorrow, I'll shave my head with clippers.
Hey, son. You have to be realistic. Isn’t it about time you followed in my footsteps and became a Buddhist priest?