demonstration

tone, pitch / color

trouble

Alternative form of トランジスタ (toranjisuta, “transistor”)

dry

dry cleaning (process of cleaning without water)

driver, a person who drives a vehicle / (computing) driver, a program acting as interface between an application and hardware / screwdriver

drive-in

a drill (tool) / a drill (activity done as an exercise or practice) / a workbook (exercise book) / a drill (Old World monkey) / (fiction) curled long hair

a night game (of e.g. baseball)