Editing Bilabial click (section)

==Origins==
Labial clicks may have arisen historically from [[labialization]] of other places of articulation. Starostin (2003)<ref>George Starostin (2003) [http://starling.rinet.ru/Texts/khoilex.pdf A lexicostatistical approach towards reconstructing Proto-Khoisan], page 22. ''Mother Tongue'', vol. VIII.</ref> notes that the ǂ’Amkoe words for 'one' and 'two', {{IPA|/ʘ̃ũ/}} and {{IPA|/ʘoa/}}, have labial clicks whereas no other Khoisan language has a labial consonant of any kind in its words for these numerals, and Starostin (2007)<ref>George Starostin (2007) 'Лабиальные кликсы в койсанских языках' ('On labial clicks')</ref> and Sands reconstruct a series of labialized clicks in [[Kx'a languages|Proto-Kxʼa]], which became labial clicks in ǂ’Amkoe. In Hadza, the word for 'kiss', {{IPA|/ǀ̃ua/}}, becomes a mimetic {{IPA|/ǀ̃ʷa/}} or {{IPA|/ʘ̃ʷa/}} in greetings.<ref>Anywire, Bala, Miller & Sands (2013) ''A Hadza Lexicon'', ms.</ref>