Waharoa, n. 1. Entrance to a fortified pa; or, more strictly, the main walk or roadway in the pa.
2. Atrina zelandica, horse mussel. = huru roa, kukuku, kupā, toretore.
3. A ceremonial oven in connection with rites for the dead. Called also imu (or umu) waharoa. Ko te rua o nga imu, te ingoa he waharoa.—Meatia te imu tapu, meatia te imu waharoa.
Williams Dictionary