I. ˈyak noun
( plural yaks also yak )
Etymology: Tibetan (Lhasa dialect) ya ʔ (spelled gyag
Date: 1795
: a large long-haired wild or domesticated ox ( Bos grunniens syn. B. mutus ) of Tibet and adjacent elevated parts of central Asia
II.
variant of yuk I
III. intransitive verb
also yack
( yakked also yacked ; yak·king also yack·ing )
Etymology: probably imitative
Date: 1949
: to talk persistently : chatter
IV. noun
also yack ˈyak
Date: 1950
: persistent or voluble talk