sibling
Word family nounsiblingsibsibship
sib·ling /ˈsɪblɪŋ/ ●○○ noun [countableC] 1 formalSSFFAMILY a brother or sister 兄弟;姊妹 Most young smokers are influenced by their friends’ and older siblings’ smoking habits. 大多数年轻的吸烟者都是因为他们的朋友或者哥哥姐姐有吸烟习惯而受影响的。
2. sibling rivalry MPcompetition between brothers and sisters for their parents’ attention or love 手足相争〔指兄弟姐妹为得到父母的关注或宠爱的竞争〕 Origin sibling Old English sibb “related”