theodolite |
| noun
- a surveying instrument, consisting of a small mounted telescope, used to measure horizontal and vertical angles
| | thruster |
| noun
- A device for propelling an object, especially a spacecraft or a ship (marine vessel).
- (surfing) A surfboard (usually a shortboard) with three fins of approximately equal size, one centred at the back, one on each side about 25cm forward and out near the rails.
| tumble |
| verb (tumbl, ing)
- (intransitive) To fall end over end.
- To perform gymnastics such as somersaults, rolls, and handsprings.
- To roll over and over.
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