| antimacassar | (noun) a piece of ornamented cloth that protects the back of a chair from hair oils | - |
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| bursar | (noun) the treasurer at a college or university | - |
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| commissar | (noun) an official of the Communist Party who was assigned to teach party principles to a military unit | Synonyms: political commissar |
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| hussar | (noun) a member of a European light cavalry unit; renowned for elegant dress | - |
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| pulsar | (noun) a degenerate neutron star; small and extremely dense; rotates very fast and emits regular pulses of polarized radiation | - |
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| quasar | (noun) a starlike object that may send out radio waves and other forms of energy; many have large red shifts | Synonyms: quasi-stellar radio source |
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| tsar | (noun) a male monarch or emperor (especially of Russia prior to 1917) | Synonyms: czar, tzar |
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