A reimiro is a decorative crescent-shaped pectoral ornament once worn by the women of Easter Island. The name comes from the Rapanuirei 'stern' or 'prow' and miro 'boat'. Thus the crescent represents a Polynesian canoe.
Each side of the reimiro ended in a human head. The outer, display side had two small pierced bumps through which a cord was strung for hanging it. The inner side contained a cavity that was filled with chalk made from powdered seashells.
A reimiro provides the image of the Easter Island flag. It also appear to feature in the rongorongo script of Easter Island, and one of them is preserved with a long rongorongo text.
Although the human heads on the reimiro are unique to Easter Island, the pectoral itself is part of a wider tradition. In the Solomon Islands, for example, women wear shell pectorals which resemble reimiro.
Chauvet, Stéphen-Charles. 1935. L'île de Pâques et ses mystères ("Easter Island and its Mysteries"). Paris: Éditions Tel. (An online English version translated by Ann Altman and edited by Shawn McLaughlin is available www.chauvet-translation.com here.)de:Rei-Miro