The Avestan word staman
Word staman
Meaning mouth
See also Homeric Greek: στόμα ‘mouth’
Proto-Indo-European: *stómn̥ ‘mouth’

Comments
Dog mouth

Other words that might be of interest
zānu- ‘jaw’, čarǝman- ‘skin’, zǝrǝd- ‘heart’, sarah- ‘head’, gava ‘hand’, hizū ‘tongue’, bruuat̰ ‘eyebrow’, ast- ‘bone’, tanū- ‘body’, bāzu ‘arm, leg’, nāfa- ‘navel’, zānu- ‘knee’, xvafəna- ‘sleep’, pad- ‘foot’