Čeština: Znak obce Ostrá, okres Nymburk. V modrém štítě ze zeleného návrší vyrůstající na jednom stonku tři zlaté obilné klasy, nad nimi stříbrná ryba, provázená v rozích štítu dvěma zlatými hvězdami.
English: Municipal coat of arms of Ostrá village, Nymburk District, Czech Republic.
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