tribal (adj.)youdaoicibaDictYouDict[tribal 词源字典]
1630s, "pertaining to or characteristic of tribes," from tribe + -al (1). Meaning "characterized by a strong sense of loyalty to one's group" is from 1951 (Arendt). As a style of belly-dance from 1999, American English. Related: Tribally.[tribal etymology, tribal origin, 英语词源]