a1 Department of Linguistics, Cornell University firstname.lastname@example.org
a2 Department of Linguistics, Cornell University email@example.com
a3 Department of English, Northern Arizona University firstname.lastname@example.org
a4 Department of Language and Literature Studies, The University of Namibia email@example.com
a5 Institut für Linguistik, Allgemeine Sprachwissenschaft, Universität zu Köln firstname.lastname@example.org
a6 Department of Linguistics, New York University email@example.com
This paper describes the consonant inventory of the endangered southern African language Nuu. Our novel approach to segment classification accounts for all 73 Nuu consonants with just four phonetic dimensions (place, manner, phonation, airstream) and does away with the phonetically empty category click accompaniment. We provide ultrasound data showing that the posterior constrictions in clicks are not produced at the ‘velar’ place of articulation, and that posterior place differs with anterior place. We therefore argue for a terminological shift from velaric to lingual airstream mechanism. Our data also show that the posterior place of articulation is the same in Nuu's five lingual ([ ǃ ǂ]) and linguo-pulmonic () stops. We argue that the difference between these segment classes is best captured in terms of airstream, not place. Plain clicks use only the lingual airstream, while linguo-pulmonic segments are airstream contours, in which the transition to the pulmonic airstream occurs within the segment rather than at its boundary. Our evidence suggests that the contrast between ‘velar’ and ‘uvular’ clicks proposed for the related language ǃXóõ is likely also one of airstream and that a contrast solely in terms of posterior place would be articulatorily impossible.