navel

Từ điển Oxford Advanced Learner 8th

navel [navel navels] BrE [ˈneɪvl] NAmE [ˈneɪvl] (also informal ˈbelly button) (BrE also ˈtummy button) noun
the small hollow part or lump in the middle of the stomach where the ↑umbilical cord was cut at birth
See also: ↑belly button ▪ ↑tummy button

Word Origin:
Old English nafela, of Germanic origin; related to Dutch navel and German Nabel, from an Indo-European root shared by Latin umbo ‘boss of a shield’, umbilicus ‘navel’, and Greek omphalos ‘boss, navel’.

• Từ đồng nghĩa / Synonyms:
  navel point, umbilicus, bellybutton, belly button, omphalos, omphalus