| THRA | a region and ancient country in the east of the Balkan Peninsula north of the Aegean Sea |
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| THRA | a Thraco-Phrygian language spoken by the ancient people of Thrace but extinct by the early Middle Ages |
| THRA | an extinct branch of the Indo-European language family thought by some to be related to Armenian |
| THRA | the state of being under the control of another person |
| THRA | someone held in bondage |
| THRA | the state of being under the control of another person |
| THRA | the state of being under the control of another person |
| THRA | a swimming kick used while treading water |
| THRA | beat thoroughly in a competition or fight |
| THRA | give a thrashing to |
| THRA | beat the seeds out of a grain |
| THRA | move data into and out of core rather than performing useful computation |