PTS Pali-English dictionary - The Pali Text Society's Pali-English dictionary
bella
Bella,(m.& nt.) [=beluva,q.v.] the fruit of the Vilva tree (a kind of citron?) J.III,77 (C.beluva); VI,578.Also in doubtful passage at J.III,319 (v.l.mella,phella).(Page 490)