The number of times this syllable is repeated is variable. This is an imitative word and there are variations. And not everyone uses it in the first place.

(qurgh, qep'a' 24, 7/2017):  "The cat said, 'meow'."  Marc said yes.  "The cat meowed as I walked by."  Marc said no.  [Okrand] said these are words that described the sounds that the animals make.  They are pretty much onomatopoeias of the animals noises.

SEE ALSO:

'Imyagh         sound made by a vIghro' or ghISnar cat (excl)
ghugh           vocalize (by animals) (v)