Tapu (also Tabu) was a permanent lease of state-owned arable land to a peasant family in the Ottoman Empire. The term was also used to indicate the title deed that certified tapu rights.

Mana and Tapu
Taking the Tapu: Defining Micronesia by Absence
Tapu, Mana, Mauri, Hau, Wairua: A Maori philosophy of vitalism and cosmos
Tapu and Mana: Ritual Authority and Political Power in Traditional Maori Society
Memoir No. 40. TAPU REMOVAL IN MAORI RELIGION. PART 3: PAGES 59-96
Memoir No. 40. TAPU REMOVAL IN MAORI RELIGION. PART 2: PAGES 43-58
Mana, tapu, noa: Maori cultural constructs with medical and psycho-social relevance
Recession of samudra tapu glacier, chandra river basin, Himachal Pradesh
Polynesian tapu in the 'deontic square': A cognitive concept, its linguistic expression and cultural context
Relating Microbial Community and Physicochemical Parameters of a Hot Spring: Champagne Pool, Wai-o-tapu, New Zealand