大姐

big sister / elder sister / older sister (also polite term of address for a girl or woman slightly older than the speaker)

see 大夫[dai4 fu5]

big; large; great / older (than another person) / eldest (as in 大姐[da4 jie3]) / greatly; freely; fully / (dialect) father / (dialect) uncle (father's brother)

older sister

common word for ladybug, more formally 瓢蟲|瓢虫[piao2 chong2]

(Tw) female gang leader / female boss / big sister