Thisetymology is missing or incomplete. Please add to it, or discuss it at theEtymology scriptorium. Particularly: “Related to酷(khok)? as per Douglas (1873), Campbell (1913), Tōhō (1931), Ogawa (1932), etc.”
周长楫[Zhou, Changji], editor (2006), “啄”, in闽南方言大词典 MINNAN FANGYAN DA CIDIAN [Dictionary of Southern Min dialects] (overall work in Hokkien and Mandarin), Fuzhou:福建人民出版社[Fujian People's Publishing House],→ISBN, pages629-630.
Douglas, Carstairs (1873) “tok”, inChinese-English Dictionary of the Vernacular or Spoken Language of Amoy, With the Principal Variations of the Chang-chew and Chin-chew Dialects. (overall work in Hokkien and English), London: Trübner & Co.,page526;New Edition, With Corrections by the Author.,Thomas Barclay,Lîm Iàn-sîn林燕臣, London: Publishing Office of the Presbyterian Church of England,1899,page526
Douglas, Carstairs (1873) “khok”, inChinese-English Dictionary of the Vernacular or Spoken Language of Amoy, With the Principal Variations of the Chang-chew and Chin-chew Dialects. (overall work in Hokkien and English), London: Trübner & Co.,page283;New Edition, With Corrections by the Author.,Thomas Barclay,Lîm Iàn-sîn林燕臣, London: Publishing Office of the Presbyterian Church of England,1899,page283