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  1.                 From WordNet dictionary, version 3.0:
                

    
                
                  
    yowl
n. 1. a very loud utterance (like the sound of an animal); "his bellow filled the hallway"
Synonyms: bellow, bellowing, holla, holler, hollering, hollo, holloa, roar, roaring
v. 1. cry loudly, as of animals; "The coyotes were howling in the desert"
Synonyms: howl, wrawl, yammer
2. utter shrieks, as of cats
Synonyms: caterwaul