Sentence:  It would have been a great privilege to be the mistress of an old time-honoured mansion, to call oaks and elms her own, to know that acres of gardens were submitted to her caprices, to look at herds of cows and oxen, and be aware that they <WSD>lowed</WSD> on her own pastures. 
Meaning of the word marked with <WSD> tags:  To moo.