1shin·gle 
/ˈʃɪŋgəl/ noun
plural shin·gles /ˈʃɪŋgəl/ noun [count] : a small, thin piece of building material that is used to cover the roof or sides of a building
hang out your shingle
US, informal : to start your own business especially as a doctor or lawyer
▪ She graduated from law school and hung out her shingle.
▪ She graduated from law school and hung out her shingle.
— compare 3shingle
