Definition of "pattamar"

They proved to be the wives of a body of sepoys, also from the 5th Regiment of Bombay Native Infantry; the sepoys had perished, and their families been enslaved, when their pattamar had been captured by the Qawasim some months before.

1997, Charles E. Davies, The Blood-red Arab Flag: An Investigation Into Qasimi Piracy, 1797-1820, University of Exeter Press, page 312