DAK

n. system of mail delivery or passenger transportation using relays of horses or bearers in India; mail in India

The German Africa Corps (German: Deutsches Afrikakorps, DAK ) was the original German expeditionary force in Libya and Egypt during the North African Campaign of World War II. The force became the main German contribution to Panzer Army Africa which evolved into the German-Italian Panzer Army (Deutsch-Italienische Panzerarmee) and Army Group Africa.
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Noun
1. East Indian tree bearing a profusion of intense vermilion velvet-textured blooms and yielding a yellow dye
(synonym) dhak, palas, Butea frondosa, Butea monosperma
(hypernym) tree
(member-holonym) Butea, genus Butea

n. roof, exterior upper covering of a building; canopy, covering

(n.)
Post; mail; also, the mail or postal arrangements; -- spelt also dawk, and dauk.