The Old Norse word munni
Word munni
m u n n i
Meaning mouth, opening

Other words that might be of interest
and ‘spirit, soul’, bein ‘bone, legs’, armr ‘arm’, magi ‘belly, stomach’, blóð ‘blood’, andlauss ‘breathless, lifeless’, eyra ‘ear’, egg ‘egg’, auga ‘eye’, fjøðr ‘feather’, hold ‘flesh’, fótr ‘foot’, hár ‘hair’, hønd ‘hand’, høfuð ‘head’, hjarta ‘heart’, horn ‘horn’, kné ‘knee’, lifr ‘liver’, kjøt ‘meat, flesh’, hals ‘neck’, nøs ‘nostril, nose’, skinn ‘skin, fur’, hali ‘tail’, bita ‘to cut into bits, to bite’, deyða ‘to kill’, sofa ‘to sleep’, tunga ‘tongue’, tønn ‘tooth’, spor ‘track, footprint’, vømb ‘womb’