tuatahi
1. (modifier) first.
Anei rā tā mātau maramataka tā te Māori mai i te rā tuatahi o te marama ki te toru tekau mā tahi o ngā rā o te marama (HP 1991:30). / Here is the almanac according to the Māori, from the first day to the thirty-first day of the month.
See also tua-