Oro Win language

Oro Win is a moribund Chapacuran language spoken along the upper stretches of the Pacaás Novos River in Brazil.^[2] As of 2010, there were only six known speakers of Oro Win in Brazil, and all of them were over 50 years of age.^[3] However, other reports dictate that there are 12 speakers as of 2015, and there are efforts to increase use of Oro Win among the community.^[4][5]

Oro Win
Oro Towati'
Native to	Brazil
Region	Rondônia
Ethnicity	55 Oro Win (1998)[1]
Native speakers	5 (2011)[1]
Language family	Chapacuran Wari Oro Win
Language codes
ISO 639-3	orw
Glottolog	orow1243
ELP	Orowari
Oro Win is classified as Critically Endangered by the UNESCO Atlas of the World's Languages in Danger.
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Phonology

Oro Win is one of only five languages known to make use of a voiceless bilabially post-trilled dental stop, [t͡ʙ̥].

Vowels^[6]

	Front	Back
Close	i
Near-close	ʏ
Close-mid	e	o
Open	a

Consonants^[6]

	Bilabial	Dental	Alveolar	Palatal	Velar	Glottal
Stop	p	t̪ʙ	t		k	ʔ
Fricative	ɸ		s
Nasal	m		n
Flap			ɾ
Semivowel				j	w

Vocabulary

[tʙ̥otʙ̥ok inan] 'I walk on logs'

[kotʙ̥ok inan] 'I start a motor'

[katʙ̥ʉ na] 'It is an owl'

[tʙ̥untʙʉ na] 'It is a helicopter'

[tʙ̥um] 'small boy'^[7]