yack

UK: /jæk/ US: (yak)

WordReference Random House Unabridged Dictionary of American English © 2026

yack (yak), v.i., n. [Slang.]

1. Slang Terms yak².

yack′er, n. 

Collins Concise English Dictionary © HarperCollins Publishers::

yack / jæk/ noun , verb

1. a variant spelling of yak2

WordReference Random House Learner's Dictionary of American English © 2026

yak¹ /yæk/   n. [countable]

1. Mammals a large, shaggy-haired ox of the Tibetan highlands, having long, curved horns.

yak² or yack /yæk/   v. [no object] , yakked or yacked, yak•king or yack•ing. [Slang.]

1. Slang Terms to gab;
   chatter:
   Let's quit yakking and get back to work.

WordReference Random House Unabridged Dictionary of American English © 2026

yak¹ (yak),  n. 

1. Mammals a large, stocky, shaggy-haired wild ox, Bos grunniens, of the Tibetan highlands, having long, curved horns: endangered.
2. Mammals a domesticated variety of this animal.

• Tibetan, spelling, spelled gyag
• 1785–95

yak² (yak),  v., yakked, yak•king, n. [Slang.]

v.i. 

1. Slang Terms to talk, esp. uninterruptedly and idly;
   gab;
   chatter:
   They've been yakking on the phone for over an hour.

n. 

2. Slang Terms incessant idle or gossipy talk.

Also, yack, yackety-yak. 

• apparently of expressive origin, originally 1945–50, American.

yak′ker, n. 

yak³ (yak), n., v.i., v.t., yakked, yak•king. [Slang.]

1. yuk¹.