shingl イディオム
	hang out one's shingle
give public notice of the opening of a doctor's office etc The doctor decided to hang up his shingle as soon as he finished medical school.
hang out one's shingle|hang|shingle
v. phr., 
informal To give public notice of the opening of an office, especially a doctor's or lawyer's office, by putting up a small signboard. 
The young doctor hung out his shingle and soon had a large practice.
shingle
shingle see 
hang out one's shingle.