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a. (in Britain) a police officer ranking between constable and inspector
b. (in the US) a police officer ranking below a captain
3. a court or municipal officer who has ceremonial duties
4. (formerly) a tenant by military service, not of knightly rank



a military rank in the armed forces of the USSR and many other countries. In Russia the rank of sergeant dates from the 17th century in regiments formed on the West European model and in the Russian Army before 1798. In the USSR the ranks of junior sergeant, sergeant, and senior sergeant were introduced in 1940.

References in periodicals archive ?
A few months later, as a buck sergeant, Devito was assigned to the glider unit.
if buck sergeants used all the authority given by law and regulation, they would scare all of us .
It's the buck sergeants, the staff sergeants, it's the young lieutenants who are taking this war on," he said.