10-letter words containing t, r, o, m, b
- trombonist — musician who plays the trombone
- tuberiform — in the form of a tuber
- turbo pump — a turbine powered pump
- umber moth — any of various brownish geometrid moths, esp the waved umber (Menophra abruptaria) and small waved umber (Horisme vitalbata), that are cryptically marked to merge with tree bark, and the mottled umber (Erannis defoliaria) whose looper larvae can strip branches and even trees
- umberto ii — 1904–83, the last king of Italy (1946), following the abdication of his father Victor Emmanuel III: abdicated when a referendum supported the abolition of the monarchy
- vibrometer — a vibrograph that measures the amplitude of vibrations.
- water bomb — a bag filled with water and mischievously dropped from a height upon a passerby below.