There are 2 definitions of yak in English:

yak1

Syllabification: yak

noun (plural same or yaks)

  • A large domesticated wild ox with shaggy hair, humped shoulders, and large horns, used in Tibet as a pack animal and for its milk, meat, and hide.
    • Genus Bos, family Bovidae; the domesticated B. grunniens, descended from the wild B. mutus, which rarely is still found at high altitude
    More example sentences
    • Milk products were common in the form of sour cream and butter from cows and yaks.
    • Butchers from Tibet come especially to slaughter yaks whose meat is then dried and smoked.
    • Their yaks share these high, sunny pastures with blue sheep and plump marmots.

Origin

late 18th century: from Tibetan gyag.

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Definition of yak in:

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Word of the day skosh
Pronunciation: skəʊʃ
noun
a small amount; a little

There are 2 definitions of yak in English:

yak2

Syllabification: yak
(also yack or yackety-yak)
informal

noun

[in singular]
  • A trivial or unduly persistent conversation.
    More example sentences
    • He was quick to raise his voice through a cordless microphone to silence the gathering engaged in a yak.
    • Certainly the bombast of cable's top yak show host, Bill O'Reilly, seems anything but cool.
    • Likewise, Laurie Brereton, Latham's numbers man, occasionally walked the floor to have a yak to colleagues.

verb (yaks, yakking, yakked)

[no object] Back to top  
  • Talk at length about trivial or boring subjects.
    More example sentences
    • All too often, diners get to the table and yack away and make the waitress come back several times.
    • So it was easier to let the old blowhard yak away and just nod occasionally.
    • This is a sweet fella, wouldn't hurt a soul, but he yaks, and yaks, and yaks.

Origin

1950s: imitative.

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Definition of yak in:

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Word of the day skosh
Pronunciation: skəʊʃ
noun
a small amount; a little