Dutch cap

= diaphragm 4.

dusk, duskiness, dusky, dust, dust bowl, dust devil, dust-cart, dust-cover, dust-jacket, dust-sheet, dust-up, dustbin, duster, dustiness, dustman, dustpan, dusty, Dutch, Dutch auction, Dutch barn, Dutch elm, Dutch oven, Dutchman, duteous, dutiable, dutiful, dutifully, duty, duty-bound, duty-free, duvet, DV, dwarf, dwell, dwell on, dweller, dwelling, dwindle, dye, dyed-in-the-wool,