japrak

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Proto-Turkic: *japur-gak
Altaic etymology: Altaic etymology
Proto-Altaic: *li̯àp`[à]
Nostratic: Nostratic
Russian meaning: лист
Turkic: *japur-gak
Mongolian: *labči
Korean: *níph
Japanese: *nàpài
Comments: VEWT 188, EDT 879-80, ЭСТЯ 4, 130-132, Лексика 111-112, Stachowski 100. Clauson derives *japur-gak from *japur- 'to smoothe, level', which is an obvious contamination - just as the contamination with *jalpɨ- 'flat' (v. sub *dĕ̀lp`à) in some languages.
Old Turkic: japɨrɣaq (OUygh.)
Karakhanid: japurɣaq (MK)
Turkish: japrak
Tatar: jafraq
Middle Turkic: japɨrɣan (Abush.), j[a]praq (MA)
Uzbek: japrɔq
Uighur: jopurmaq
Azerbaidzhan: jarpaG
Turkmen: japraq
Oyrat: d́albɨraq
Yakut: sebirdex
Dolgan: hebirdek
Tuva: čövüree 'bark'
Tofalar: čö'prää 'bark'
Kirghiz: ǯalbɨraq
Kazakh: žapɨraq
Noghai: japɨraq
Bashkir: japraq
Balkar: čapraq
Gagauz: japraq
Karaim: japrax
Karakalpak: žapɨraq
Salar: järfɨχ
Kumyk: japraq