1) Army health unit 2) Asian gazelle 3) Gazelle of Asia 
• (n.) The Asiatic gazelle.
(from the article `art and architecture, Oceanic`) ...The ceremonial ground was a place of worship. It usually took the form of an enclosure (marae), which was raised or walled or in some other way ... The island is famous for its gigantic stone statues, of which there are more than 600, and for the ruins of giant stone platforms (ahus)...
Assistant Hospitalo-Universitaire
A'hu noun [ Native name.] (Zoology) The Asiatic gazelle. 
Army Health Unit
a stone heap or platform used by the Polynesians as a marker or memorial.