2. (noun) moon on the eighth night after the full moon.
Mā te Tangaroa-ā-mua nei e whakapūmau te āhua o te roanga atu o ngā Tangaroa katoa (WT 2013:32). / It is during the first night of Tangaroa, Tangaroa-ā-mua, that the true nature of the Tangaroa period will be confirmed (WT 2013:32).