Hāmama. 1. a. Open, gaping. Ko te taniwha, kua hamama haere mai te waha (T. 151). Pae tahi hamama te rakau nei (This tree is more than one fathom is circumference; lit., one fathom gaping—the fathom being measured by the extended arms). Hamama tou waha (Open your mouth).
2. Vacant, exempt. Kei hea te wahi o te ao i hamama i te raru?
3. v.i. Shout. I reira ka hamama te waha o te kuia raka ki te ki atu ki a ia (T. 165). hāmamamama, v.i. Yawn.
Williams Dictionary