Dak (da̤k or däk), n. [Hind. ḍāk.] Post; mail; also, the mail or postal arrangements; — spelt also dawk, and dauk.
Dak boat, a mail boat. Percy Smith. — Dak bungalow, a traveler's rest-house at the end of a dak stage. — To travel by dak, to travel by relays of palanquins or other carriage, as fast as the post along a road.