a sum of money whose principal or interest is set apart for a specific objective
(in pl) an available supply of money
an available quantity of material or intangible resources
a fund of knowledge
Latin fundus bottom, basis, or piece of landed property. The word was orig used in the Latin senses ‘bottom, basis’, later ‘source of supply’, perhaps from the idea of landed property as the basis or source of wealth, although fund has never had the meaning ‘landed property’