Things that are bounteous are plentiful and generously given. Your friends might celebrate your birthday by bringing you a bounteous armful of flowers.
Farmers planting their crops in the spring hope for a bounteous harvest in the summer, and the very best elementary school teachers have bounteous amounts of affection for children. Bounteous things are found in great abundance. The word's original, fourteenth century meaning was "full of goodness," from the noun bounty, or "generosity." The Latin root is bonitatem, or "goodness."