Bel \Bel\ (b[e^]l), n. [Hind., fr. Skr. bilva.] A thorny rutaceous tree ({[AE]gle marmelos}) of India, and its aromatic, orange-like fruit; -- called also {Bengal quince}, {golden apple}, {wood apple}. The fruit is used medicinally, and the rind yields a perfume and a yellow dye. [Webster 1913 Suppl.]