'Citron' in the Bible

As a citron among trees of the forest, So is my beloved among the sons, In his shade I delighted, and sat down, And his fruit is sweet to my palate.

cargoes of gold and silver and precious stones and pearls and fine linen and purple and silk and scarlet, and every kind of citron wood and every article of ivory and every article made from very costly wood and bronze and iron and marble,