Senses
师姐/ 師姐 senior female fellow student
Senior female fellow student or apprentice; often used for a woman who began studying under the same teacher before oneself.
师姐/ 師姐 elder daughter of one's teacher
Terms of address for a daughter of one's teacher or master who is older than oneself.
师姐/ 師姐 father's female apprentice
Terms of address for a female apprentice of one's father who is older than oneself