9-letter words containing u, m, b, r
- tambourin — a long narrow drum of Provence.
- tube worm — any of various marine worms that produce and inhabit a tube, some being adapted to a hydrothermal vent environment.
- turbopump — a turbine-driven pump, as one used to feed propellant to a rocket engine.
- umberto i — (Umberto I) 1844–1900, king of Italy 1878–1900.
- umbracula — umbrella-like structures
- umbratile — shadowy; shady
- underbrim — the part of a hat found under the brim
- ytterbium — a rare metallic element found in gadolinite and forming compounds resembling those of yttrium. Symbol: Yb; atomic weight: 173.04; atomic number: 70; specific gravity: 6.96.