capital city of Iraq; the name is pre-Islamic and dates to the 8c., but its origin is disputed. It often is conjectured to be of Indo-European origin, from Middle Persian elements, and mean "gift of god," from bagh "god" (cognate with Russian bog "god," Sanskrit Bhaga; compare Bhagavad-Gita) + dād "given" (from PIE root *do- "to give"). But some have suggested origins for the name in older languages of the region. Marco Polo (13c.) wrote it Baudac.

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Definitions of Baghdad from WordNet

Baghdad (n.)
capital and largest city of Iraq; located on the Tigris River;
Synonyms: Bagdad / capital of Iraq