navel
noun [ C ] uk/ˈneɪ.vəl/ us/ˈneɪ.vəl/ (informal belly button)
肚脐
the small round part in the middle of the stomach that is left after the umbilical cord (= the long tube of flesh joining the baby to its mother) has been cut at birth
Idiom
gaze at/contemplate your navelidiom humorous 以自我为中心;过多考虑自己的问题
to spend too much time thinking about yourself and your own problems