婶婶 refers to one's father's younger sister.
Topic 1.1: 1.1 Families and Communities in China
婶婶 (shěnshen) cheat sheet for homework
One's father's older sister.
堂弟 (táng dì): One's younger male cousin from the same paternal side.
表弟 (biǎo dì): One's male cousin from the maternal side.