Yes, DRAGOMAN is a Scrabble word!

Letter values in Scrabble US: D 2, R 1, A 1, G 2, O 1, M 3, A 1, N 1.

Is it a valid word?

DRAGOMAN is a valid word in the official Scrabble dictionary (US), the UK Scrabble Dictionary and Words with Friends (ENABLE).

an interpreter and guide in the Near East; in the Ottoman Empire in the 18th and 19th centuries a translator of European languages for the Turkish and Arab authorities and most dragomans were Greek (many reached high positions in the government)