trimoda necessitas

noun

tri·​mo·​da ne·​ces·​si·​tas

¦trīmədənə̇ˈsesəˌtas,

¦triməˌdäˌneˈkesəˌtäs

: the threefold burden or charge on Anglo-Saxon landholders of army service, repair of strongholds, and repair of bridges

Word History

Etymology

Medieval Latin, literally, necessity of three kinds

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