sira in English dictionary sira Meanings and definitions of "sira" (Islam) A traditional Muslim biography of Muhammad. noun (Islam) A traditional Muslim biography of Muhammad. more Grammar and declension of sira sira ( plural siras) sira (plural siras) more Sira Sample sentences with "sira" Declension Stem Try again Available translations Ahom Bashkir Catalan Czech Galician Norwegian Norwegian Nynorsk Sira Spanish Authors