doab

noun
do·​ab | \ ˈdōˌäb\
plural -s

Definition of doab

: a tract of land between two rivers : interfluve

History and Etymology for doab

Persian dōāb, from dō two (from Middle Persian) + -āb water, from Old Persian āpi-; akin to Avestan dvā- two, Sanskrit dva, and to Avestan āp- water

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