Taiwan low; cyclone from Taiwan
Meteorological term for a low-pressure system that develops near Taiwan and moves into the East China Sea, often bringing bad weather.
When a Taiwan low forms, the weather around Japan tends to become unsettled.
spot baldness; alopecia areata
Colloquial, somewhat dated term for patchy hair loss, likening the bald spot to a monk's shaven head. The medical term is 円形脱毛症.
See also: 円形脱毛症
He apparently got a bald spot when he was young and couldn't go without a hat for a while.