dental floss
— Noun
– English
～ a soft thread for cleaning the spaces between the teeth
dwarf flowering almond
— Noun
– English
～ small Chinese shrub with smooth unfurrowed dark red fruit grown especially for its red or pink or white flowers
digestive fluid
— Noun
– English
～ secretions that aid digestion
drilling fluid
— Noun
– English
～ a mixture of clays and chemicals and water; pumped down the drill pipe to lubricate and cool the drilling bit and to flush out the cuttings and to strengthen the sides of the hole