A low cry (3)

I believe the answer is:

moo

I believe this is a double definition.

'a low' is the first definition.
(both can mean to make the noise of a cow)

'cry' is the second definition.
(I know that moo is a type of cry)

(Other definitions for moo that I've seen before include "Bovine low" , "Cartoon sound of a cow" , "Cow's low" , "Cow's sound" , "Guernsey noise?" .)

I've seen this clue in The Globe and Mail and the Evening Standard.

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